[1] : The Collaborative International Dictionary of English v.0.48

metal \met"al\ ? or ?; 277, n. f. m'etal, l. metallum
   metal, mine, gr. ? mine; cf. gr. ? to search after. cf.
   mettle, medal.
   1. chem. an elementary substance, as sodium, calcium, or
      copper, whose oxide or hydroxide has basic rather than
      acid properties, as contrasted with the nonmetals, or
      metalloids. no sharp line can be drawn between the metals
      and nonmetals, and certain elements partake of both acid
      and basic qualities, as chromium, manganese, bismuth, etc.
      1913 webster

   note: popularly, the name is applied to certain hard, fusible
         metals, as gold, silver, copper, iron, tin, lead, zinc,
         nickel, etc., and also to the mixed metals, or metallic
         alloys, as brass, bronze, steel, bell metal, etc.
         1913 webster

   2. ore from which a metal is derived; -- so called by miners.
      --raymond.
      1913 webster

   3. a mine from which ores are taken. obs.
      1913 webster

            slaves . . . and persons condemned to metals. --jer.
                                                  taylor.
      1913 webster

   4. the substance of which anything is made; material; hence,
      constitutional disposition; character; temper.
      1913 webster

            not till god make men of some other metal than
            earth.                                --shak.
      1913 webster

   5. courage; spirit; mettle. see mettle. --shak.
      1913 webster

   note: the allusion is to the temper of the metal of a sword
         blade. --skeat.
         1913 webster

   6. the broken stone used in macadamizing roads and ballasting
      railroads.
      1913 webster

   7. the effective power or caliber of guns carried by a vessel
      of war.
      1913 webster

   8. glass in a state of fusion. --knight.
      1913 webster

   9. pl. the rails of a railroad. eng.
      1913 webster

   base metal chem., any one of the metals, as iron, lead,
      etc., which are readily tarnished or oxidized, in contrast
      with the noble metals. in general, a metal of small value,
      as compared with gold or silver.

   fusible metal metal., a very fusible alloy, usually
      consisting of bismuth with lead, tin, or cadmium.

   heavy metals chem., the metallic elements not included in
      the groups of the alkalies, alkaline earths, or the
      earths; specifically, the heavy metals, as gold, mercury,
      platinum, lead, silver, etc.

   light metals chem., the metallic elements of the alkali
      and alkaline earth groups, as sodium, lithium, calcium,
      magnesium, etc.; also, sometimes, the metals of the
      earths, as aluminium.

   muntz metal, an alloy for sheathing and other purposes,
      consisting of about sixty per cent of copper, and forty of
      zinc. sometimes a little lead is added. it is named from
      the inventor.

   prince's metal old chem., an alloy resembling brass,
      consisting of three parts of copper to one of zinc; --
      also called prince rupert's metal.
      1913 webster
see also:
mettle medal base metal fusible metal heavy metals light metals 
muntz metal prince's metal prince rupert's metal 

[2] : The Collaborative International Dictionary of English v.0.48

heavy \heav"y\, a. compar. heavier; superl. heaviest. oe.
   hevi, as. hefig, fr. hebban to lift, heave; akin to ohg.
   hebig, hevig, icel. h"ofigr, h"ofugr. see heave.
   1. heaved or lifted with labor; not light; weighty;
      ponderous; as, a heavy stone; hence, sometimes, large in
      extent, quantity, or effects; as, a heavy fall of rain or
      snow; a heavy failure; heavy business transactions, etc.;
      often implying strength; as, a heavy barrier; also,
      difficult to move; as, a heavy draught.
      1913 webster

   2. not easy to bear; burdensome; oppressive; hard to endure
      or accomplish; hence, grievous, afflictive; as, heavy
      yokes, expenses, undertakings, trials, news, etc.
      1913 webster

            the hand of the lord was heavy upon them of ashdod.
                                                  --1 sam. v. 6.
      1913 webster

            the king himself hath a heavy reckoning to make.
                                                  --shak.
      1913 webster

            sent hither to impart the heavy news. --wordsworth.
      1913 webster

            trust him not in matter of heavy consequence.
                                                  --shak.
      1913 webster

   3. laden with that which is weighty; encumbered; burdened;
      bowed down, either with an actual burden, or with care,
      grief, pain, disappointment.
      1913 webster

            the heavy sorrowing nobles all in council were.
                                                  --chapman.
      1913 webster

            a light wife doth make a heavy husband. --shak.
      1913 webster

   4. slow; sluggish; inactive; or lifeless, dull, inanimate,
      stupid; as, a heavy gait, looks, manners, style, and the
      like; a heavy writer or book.
      1913 webster

            whilst the heavy plowman snores.      --shak.
      1913 webster

            of a heavy, dull, degenerate mind.    --dryden.
      1913 webster

            neither is his ear heavy, that it can not hear.
                                                  --is. lix. 1.
      1913 webster

   5. strong; violent; forcible; as, a heavy sea, storm,
      cannonade, and the like.
      1913 webster

   6. loud; deep; -- said of sound; as, heavy thunder.
      1913 webster

            but, hark that heavy sound breaks in once more.
                                                  --byron.
      1913 webster

   7. dark with clouds, or ready to rain; gloomy; -- said of the
      sky.
      1913 webster

   8. impeding motion; cloggy; clayey; -- said of earth; as, a
      heavy road, soil, and the like.
      1913 webster

   9. not raised or made light; as, heavy bread.
      1913 webster

   10. not agreeable to, or suitable for, the stomach; not
       easily digested; -- said of food.
       1913 webster

   11. having much body or strength; -- said of wines, or other
       liquors.
       1913 webster

   12. with child; pregnant. r.
       1913 webster

   heavy artillery. mil.
       a guns of great weight or large caliber, esp. siege,
           garrison, and seacoast guns.
       b troops which serve heavy guns.

   heavy cavalry. see under cavalry.

   heavy fire mil., a continuous or destructive cannonading,
      or discharge of small arms.

   heavy metal mil., large guns carrying balls of a large
      size; also, large balls for such guns.

   heavy metals. chem. see under metal.

   heavy weight, in wrestling, boxing, etc., a term applied to
      the heaviest of the classes into which contestants are
      divided. cf. feather weight
       c, under feather.
           1913 webster

   note: heavy is used in composition to form many words which
         need no special explanation; as, heavy-built,
         heavy-browed, heavy-gaited, etc.
         1913 webster
see also:
heavier heaviest heave heavy artillery heavy cavalry cavalry 
heavy fire heavy metal heavy metals metal heavy weight 
feather weight feather 

Heavy Metals >> H Words
Heavy Metals, definition of term: Heavy Metals
heavy+metals_pag1.html

Heavy >> H Words
Heavy, definition of term: Heavy
heavy_pag1.html

Heavy Water >> H Words
Heavy Water, definition of term: Heavy Water
heavy+water_pag1.html

Heavy Cream >> H Words
Heavy Cream, definition of term: Heavy Cream
heavy+cream_pag1.html

Heavy Sea >> H Words
Heavy Sea, definition of term: Heavy Sea
heavy+sea_pag1.html

Heavy Metal >> H Words
Heavy Metal, definition of term: Heavy Metal
heavy+metal_pag1.html

Precious Metals >> P Words
Precious Metals, definition of term: Precious Metals
precious+metals_pag1.html

Noble Metals >> N Words
Noble Metals, definition of term: Noble Metals
noble+metals_pag1.html