earmark
1. [ noun ] identification mark on the ear of a domestic animal
Related terms: marker
2. [ verb ] give or assign a share of money or time to a particular person or cause
Synonyms: appropriate allow reserve set_aside
Examples:

"I will earmark this money for your research"

Related terms: assign reserve
3. [ noun ] a distinctive characteristic or attribute
Synonyms: trademark hallmark stylemark
Related terms: characteristic allow