The horn or antler of the hart, or male red deer. [1913 Webster]
Spirits of hartshorn (see below); volatile salts. [1913 Webster]
Hartshorn plantain(Bot.), an annual species of plantain (Plantago Coronopus); -- called also buck's-horn.Booth. --
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.Hebert. --
Salt of hartshorn(Chem.), an impure solid carbonate of ammonia, obtained by the destructive distillation of hartshorn, or any kind of bone; volatile salts.Brande & C.--
Spirits of hartshorn(Chem.), 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.