earmark
UK: ˈɪəmɑːk | US: ˈɪrmɑːrk
n. 1. A distinctive mark or feature identifying ownership or origin.
vt. 2. To designate or set aside for a specific purpose.
The word "earmark" originated in the 16th century, originally referring to a mark (e.g., a notch or cut) made on the ear of livestock to indicate ownership. The "ear" component refers literally to the animal's ear, while "mark" denotes the identifying sign. Over time, the term evolved metaphorically to mean any distinguishing feature or to designate resources for a particular use, retaining the core idea of visible identification.
The farmer used a unique earmark to identify his sheep.
The government decided to earmark funds for education reform.
Each document had an earmark to ensure proper tracking.
The project was earmarked for completion by next year.
Her bright red hair was an unmistakable earmark in the crowd.