hartshorn
(härts′hôrn′)
noun
- a hart's antler
- 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- The antler of a hart, formerly used as a source of ammonia and in smelling salts.
- Ammonium carbonate.