Definition of soft solder in English:

soft solder

noun

  • 1Solder that has a relatively low melting point, typically being an alloy of lead and tin.

  • 2Informal. Chiefly in form soft sawder. Flattery; ingratiating behaviour.

Origin

Late 16th century. From soft + solder.

Pronunciation

soft solder

/ˌsɒf(t) ˈsɒldə//ˌsɒf(t) ˈsəʊ(l)də/