- short for tinplate.
Tin is quite a rare element, occurring chiefly in the mineral cassiterite. Pure crystalline tin exists in two allotropic modifications, the metallic form ( white tin), and a semimetallic form ( grey tin). It is used in various alloys, notably bronze, and for electroplating iron or steel sheets to make tinplate
verb (tins, tinning, tinned)[with object]
Old English, of Germanic origin; related to Dutch tin and German Zinn