From hart + -s- + horn.
hartshorn (plural hartshorns)
- The antler of a hart, once used as a source of ammonia.
- (dated) An aqueous solution of ammonia; smelling salts.
- Sophia, who had tottered along with much difficulty, sunk down in her chair; but by the assistance of hartshorn and water, she was prevented from fainting away...
An aqueous solution of ammonia
hartshorn (third-person singular simple present hartshorns, present participle hartshorning, simple past and past participle hartshorned)
- (transitive) To revive with hartshorn smelling salts.
- Charles Dickens
- Accordingly, after a vast amount of moaning and crying up-stairs, and much damping of foreheads, and vinegaring of temples, and hartshorning of noses, and so forth […]