burr

(noun) seed vessel having hooks or prickles. Synonyms: bur.

(noun) rough projection left on a workpiece after drilling or cutting.

(noun) United States politician who served as vice president under Jefferson; he mortally wounded his political rival Alexander Hamilton in a duel and fled south (1756-1836). Synonyms: Burr, Aaron Burr.

(noun) rotary file for smoothing rough edges left on a workpiece.

(noun) small bit used in dentistry or surgery. Synonyms: bur.

(verb) remove the burrs from. Synonyms: bur.