hartshorn

(härtshôrn′)

noun

  1. a hart's antler
  2. Now Rare ammonium carbonate, used in smelling salts; sal volatile: so called because formerly obtained from deers' antlers

See hartshorn in American Heritage Dictionary 4

noun
  1. The antler of a hart, formerly used as a source of ammonia and in smelling salts.
  2. Ammonium carbonate.
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