hartshorn

[ hahrts-hawrn ]

/ ˈhɑrtsˌhɔrn /

the antler of a hart, formerly used as a source of ammonia.

ammonium carbonate.

Origin of hartshorn

before 1000; Middle English hertis horn, Old English heortes horn. See hart, 's¹, horn

As another example, he gave directions for preparing essence of hartshorn—prepared, literally, from the horn itself.

Medical Investigation in Seventeenth Century England |Charles W. Bodemer
When Mr. Hartshorn called for the three dogs that were to receive the honors of the show, the applause increased.

The Dogs of Boytown |Walter A. Dyer
Spirit of hartshorn is an impure solution of this salt, originally obtained by distilling hartshorn or bones.

Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I |Arnold Cooley
Patty, with pale face and lips compressed, ran to fetch the hartshorn.

Richard Carvel, Complete |Winston Churchill

Dilute liquor ammonia is now generally sold for spirit of hartshorn.

Cooley's Practical Receipts, Volume II |Arnold Cooley

hartshorn

/ (ˈhɑːtsˌhɔːn) /

an obsolete name for sal volatile (def. 2)

Old English heortes horn hart's horn (formerly a chief source of ammonia)