Solder

[Sarah]

A metal or metallic alloy used when melted for uniting adjacentmetallic edges or surfaces; a metallic coment. Hence, anything whichunites or cements. Hard solder, a solder which fuses only at a redheat, 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.

[Sarah]

1. Solder is an alloy of different metals (usually tin and lead, sometimes silver) designed to be melted at a low temperature. typically solder is used to make contacts on an electrical circuit, but it's also used to seal plumbing pipes. however solder used for this purpose usually melts at higher temperatures.
2. a verb meaning to fuse together using solder.

[Tina]

A low-melting alloy, especially one based on lead and tin or (for higher temperatures) on brass or silver, used for joining less fusible metals.