D defs.my
Entry 1 sense Webster, 1913

Porporino

· Por·po·ri·no · IPA /ˌpɔː(ɹ)pəˈɹiːnəʊ/
01 n. A composition of quicksilver, tin, and sulphur, forming a yellow powder, sometimes used by mediæval artists, for the sake of economy, inste…
  1. 1.
    A composition of quicksilver, tin, and sulphur, forming a yellow powder, sometimes used by mediæval artists, for the sake of economy, instead of gold.