Meaning

noun seed vessel having hooks or prickles

noun small bit used in dentistry or surgery

verb remove the burrs from

originFrom Middle English burre, of unknown origin but probably from North Germanic (Scandinavian) source or from Old English byrst (“bristle”). See also burr. Compare English bristle, Danish burre (“bur, burdock”), Norwegian borre, Swedish borre, and Old Norse burst (“bristle”).

Etymology from Wiktionary, CC BY-SA 3.0