from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The antler of a hart, formerly used as a source of ammonia and in smelling salts.
  • n. Ammonium carbonate.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The antler of a hart, once used as a source of ammonia.
  • n. An aqueous solution of ammonia; smelling salts.
  • v. To revive with hartshorn smelling salts.

from the GNU version of the Collaborative International Dictionary of English

  • n. The horn or antler of the hart, or male red deer.
  • n. Spirits of hartshorn (see below); volatile salts.

from The Century Dictionary and Cyclopedia

  • n. The antler of the hart or stag, Cervus elaphus.
  • n. Spirit of hartshorn; ammonia.
  • n. In botany See hartshorn-plantain.


hart +‎ 's +‎ horn. (Wiktionary)



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  • Calcined deer antler that was used to replace lead white when mixing yellow orpiment pigment.

    February 27, 2010