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

hammer \ham"mer\ ha^m"m~er, n. oe. hamer, as. hamer,
   hamor; akin to d. hamer, g.  dan. hammer, sw. hammare, icel.
   hamarr, hammer, crag, and perh. to gr. 'a`kmwn anvil, skr.
   a,cman stone.
   1. an instrument for driving nails, beating metals, and the
      like, consisting of a head, usually of steel or iron,
      fixed crosswise to a handle.
      1913 webster

            with busy hammers closing rivets up.  --shak.
      1913 webster

   2. something which in form or action resembles the common
      hammer; as:
      a that part of a clock which strikes upon the bell to
          indicate the hour.
      b the padded mallet of a piano, which strikes the wires,
          to produce the tones.
      c anat. the malleus. see under ear.
      d gun. that part of a gunlock which strikes the
          percussion cap, or firing pin; the cock; formerly,
          however, a piece of steel covering the pan of a
          flintlock musket and struck by the flint of the cock
          to ignite the priming.
      e also, a person or thing that smites or shatters; as,
          st. augustine was the hammer of heresies.
          1913 webster

                he met the stern legionaries of rome who had
                been the "massive iron hammers" of the whole
                earth.                            --j. h.
                                                  newman.
          1913 webster

   3. athletics a spherical weight attached to a flexible
      handle and hurled from a mark or ring. the weight of head
      and handle is usually not less than 16 pounds.
      webster 1913 suppl.

   atmospheric hammer, a dead-stroke hammer in which the
      spring is formed by confined air.

   drop hammer, face hammer, etc. see under drop, face,
      etc.

   hammer fish. see hammerhead.

   hammer hardening, the process of hardening metal by
      hammering it when cold.

   hammer shell zool., any species of malleus, a genus of
      marine bivalve shells, allied to the pearl oysters, having
      the wings narrow and elongated, so as to give them a
      hammer-shaped outline; -- called also hammer oyster.

   to bring to the hammer, to put up at auction.
      1913 webster
see also:
ear atmospheric hammer drop hammer face hammer drop face 
hammer fish hammerhead hammer hardening hammer shell malleus 
hammer oyster to bring to the hammer 

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

drop \drop\ dro^p, n. oe. drope, as. dropa; akin to os.
   dropo, d. drop, ohg. tropo, g. tropfen, icel. dropi, sw.
   droppe; and fr. as. dre'opan to drip, drop; akin to os.
   driopan, d. druipen, ohg. triofan, g. triefen, icel.
   drj=upa. cf. drip, droop.
   1. the quantity of fluid which falls in one small spherical
      mass; a liquid globule; a minim; hence, also, the smallest
      easily measured portion of a fluid; a small quantity; as,
      a drop of water.
      1913 webster

            with minute drops from off the eaves. --milton.
      1913 webster

            as dear to me as are the ruddy drops
            that visit my sad heart.              -- shak.
      1913 webster

            that drop of peace divine.            --keble.
      1913 webster

   2. that which resembles, or that which hangs like, a liquid
      drop; as a hanging diamond ornament, an earring, a glass
      pendant on a chandelier, a sugarplum sometimes
      medicated, or a kind of shot or slug.
      1913 webster

   3. arch.
      a same as gutta.
      b any small pendent ornament.
          1913 webster

   4. whatever is arranged to drop, hang, or fall from an
      elevated position; also, a contrivance for lowering
      something; as:
      a a door or platform opening downward; a trap door; that
          part of the gallows on which a culprit stands when he
          is to be hanged; hence, the gallows itself.
      b a machine for lowering heavy weights, as packages,
          coal wagons, etc., to a ship's deck.
      c a contrivance for temporarily lowering a gas jet.
      d a curtain which drops or falls in front of the stage
          of a theater, etc.
      e a drop press or drop hammer.
      f mach. the distance of the axis of a shaft below the
          base of a hanger.
          1913 webster

   5. pl. any medicine the dose of which is measured by drops;
      as, lavender drops.
      1913 webster

   6. naut. the depth of a square sail; -- generally applied
      to the courses only. --ham. nav. encyc.
      1913 webster

   7. act of dropping; sudden fall or descent.
      1913 webster

   ague drop, black drop. see under ague, black.

   drop by drop, in small successive quantities; in repeated
      portions. "made to taste drop by drop more than the
      bitterness of death." --burke.

   drop curtain. see drop, n., 4.
      d .

   drop forging. mech.
      a a forging made in dies by a drop hammer.
      b the process of making drop forgings.

   drop hammer mech., a hammer for forging, striking up
      metal, etc., the weight being raised by a strap or similar
      device, and then released to drop on the metal resting on
      an anvil or die.

   drop kick football, a kick given to the ball as it
      rebounds after having been dropped from the hands.

   drop lake, a pigment obtained from brazil wood. --mollett.

   drop letter, a letter to be delivered from the same office
      where posted.

   drop press mech., a drop hammer; sometimes, a dead-stroke
      hammer; -- also called drop.

   drop scene, a drop curtain on which a scene is painted. see
      drop, n., 4.
      d .

   drop seed. bot. see the list under glass.

   drop serene. med. see amaurosis.
      1913 webster
see also:
drip droop gutta ague drop black drop ague 
black drop by drop drop curtain drop drop forging 
drop hammer drop kick drop lake drop letter drop press 
drop scene drop seed glass drop serene amaurosis 

[3] : WordNet (r) 2.0

drop hammer
     n : device for making large forgings syn: drop forge, drop
         press
see also:
drop forge drop press 

Drop >> D Words
Drop, definition of term: Drop
drop_pag1.html

Drop Kick >> D Words
Drop Kick, definition of term: Drop Kick
drop+kick_pag1.html

Drop Off >> D Words
Drop Off, definition of term: Drop Off
drop+off_pag1.html

Drop Out >> D Words
Drop Out, definition of term: Drop Out
drop+out_pag1.html

Drop In >> D Words
Drop In, definition of term: Drop In
drop+in_pag1.html

Drop Dead >> D Words
Drop Dead, definition of term: Drop Dead
drop+dead_pag1.html

Drop Cloth >> D Words
Drop Cloth, definition of term: Drop Cloth
drop+cloth_pag1.html

Drop Down >> D Words
Drop Down, definition of term: Drop Down
drop+down_pag1.html

Drop By >> D Words
Drop By, definition of term: Drop By
drop+by_pag1.html

Claw Hammer >> C Words
Claw Hammer, definition of term: Claw Hammer
claw+hammer_pag1.html