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

solder \sol"der\, n. formerly soder; f. soudure, of. soudeure,
   fr. of.  f. souder to solder, l. solidare to fasten, to make
   solid. see solid, and cf. sawder.
   a metal or metallic alloy used when melted for uniting
   adjacent metallic edges or surfaces; a metallic cement.
   hence, anything which unites or cements.
   1913 webster

   hard solder, a solder which fuses only at a red heat, as
      one composed of zinc and copper, or silver and copper,
      etc.

   soft solder, a solder fusible at comparatively low
      temperatures; as, plumbers' solder, consisting of two
      parts lead and one part tin, is a soft solder.
      1913 webster
see also:
solid sawder hard solder soft solder 

[2] : WordNet (r) 2.0

soft solder
     n : solder that melts at a relatively low temperature

Soft >> S Words
Soft, definition of term: Soft
soft_pag1.html

Soft Water >> S Words
Soft Water, definition of term: Soft Water
soft+water_pag1.html

Soft Spot >> S Words
Soft Spot, definition of term: Soft Spot
soft+spot_pag1.html

Soft Goods >> S Words
Soft Goods, definition of term: Soft Goods
soft+goods_pag1.html

Soft Drink >> S Words
Soft Drink, definition of term: Soft Drink
soft+drink_pag1.html

Soft Money >> S Words
Soft Money, definition of term: Soft Money
soft+money_pag1.html