zinc-vitriolhttp://www.oed.com/dictionary/zinc-vitriol_n%3Ftab%3Dmeaning_and_usezinc-vitriol, n.
First published 1921; not fully revised

zinc-vitriolnoun

  1. 1805–
    Sulphate of zinc, white vitriol (R. Jameson Syst. Mineral., 1805, II. 35).

Originally published as part of the entry for zinc, n.

zinc, n. was first published in 1921; not fully revised.