What is the meaning of White_metal?

Any tin- or lead-based alloy (commonly used to make bearings, jewellery, toy soldiers, fusible plugs, some medals and metal type).

Silver that cannot be labeled as silver in the UK because it does not bear an Assay Office hallmark.

Any silvery or whitish metal or alloy.

Christian-themed heavy metal, as distinguished from black metal.

Source: wiktionary.org