Answer:

burls

Answer	Crossword Clue
BURLS	Tree-trunk outgrowths
BURLS	Tree bumps
BURLS	Knots in cloth.

BURLS	Knots.
BURLS	Tree knots.
BURLS	Tree-trunk growths
BURLS	Oak or elm growths
BURLS	Knots
BURLS	Knots in wool
BURLS	Tree knots
BURLS	Tree trunk outgrowths

BURLS	Tree warts
BURLS	Bumps on a log

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.