zinc-ointmenthttp://www.oed.com/dictionary/zinc-ointment_n%3Ftab%3Dmeaning_and_usezinc ointment, n.
First published 1921; not fully revised

zinc ointmentnoun

  1. 1843–
    1. 1843
      Zinc ointment.
      R. J. Graves, System of Clinical Medicine xxvi. 332

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

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