solder - definition of solder by The Free Dictionary
sol·der (sŏd′ər) n. 1. Any of various fusible alloys, usually tin and lead, used to join metallic parts. 2. Something that joins or cements. v. sol·dered, sol·der·ing, sol·ders v.tr. 1. To unite or repair (parts, for example) with solder. 2. To join or un...