zinc-whitehttp://www.oed.com/dictionary/zinc-white_n%3Ftab%3Dmeaning_and_usezinc white, n.
First published 1921; not fully revised

zinc whitenoun

  1. 1847–
    Oxide of zinc used as a white paint.
    1. 1847
      The dryer is added to the color prepared with the zinc white.
      British Pat. 11,616 9
    2. 1849
      Zinc white is valuable..in painting, on account of its durability both in oil and water.
      Weale's Dictionary Terms (at cited word)

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

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