D defs.my
Entry 1 sense Webster, 1913

Tincal

· Tin·cal · IPA /ˈtɪŋkl̩/
01 n. Crude native borax, formerly imported from Thibet. It was once the chief source of boric compounds. Cf. Borax.
  1. 1.
    Crude native borax, formerly imported from Thibet. It was once the chief source of boric compounds. Cf. Borax.(Chem.) See: Borax