- a knot in wool, thread, yarn, etc. that gives a nubby appearance to cloth
- a kind of knot on some tree trunks or woody roots
- veneer made from wood with burls in it
ME burle < OFr bourle, flocks or ends of threads < VL *burrula, small flock of wool < LL burra, wool
having a finish or veneer of or like burl
to finish (cloth) by taking out the burls, loose threads, etc.