D defs.my
Entry 2 senses Webster, 1913

Hartshorn

/(-hôrn`)/ · Harts·horn · IPA /ˈhɑːtshɔːn/
01 n. The horn or antler of the hart, or male red deer.
  1. 1.
    The horn or antler of the hart, or male red deer.
  2. 2.
    Spirits of hartshorn (see below); volatile salts.
Phrases & compounds
Hartshorn plantain — an annual species of plantain (Plantago Coronopus); -- called also buck's-horn.
Hartshorn shavings — originally taken from the horns of harts, are now obtained chiefly by planing down the bones of calves. They afford a kind of jelly.
Salt of hartshorn — an impure solid carbonate of ammonia, obtained by the destructive distillation of hartshorn, or any kind of bone; volatile salts.
Spirits of hartshorn — a solution of ammonia in water; -- so called because formerly obtained from hartshorn shavings by destructive distillation. Similar ammoniacal solutions from other sources have received the same name.