·noun anything which unites or cements.
II. Solder ·noun To Mend; to patch up.
III. Solder ·noun A metal or metallic alloy used when melted for uniting adjacent metallic edges or surfaces; a metallic cement.
IV. Solder ·noun To unite (metallic surfaces or edges) by the intervention of a more fusible metal or metallic alloy applied when melted; to join by means of metallic cement.