Earmark
Defined in 2 dictionaries — Cyclopedic (1922), Ballentine's (1916)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
A mark put upon a thing for the purpose of distinction. Money in a bag tied and labelled is said to have an earmark. 3 Maule & S. 575.
Ballentine's Law Dictionary
James A. Ballentine · 1916
An identifying or distinguishing mark; a peculiar slit made in the ears of cattle and sheep for identification.