Knot

boule

(firm swollen tissue caused by injury)

chomáč

(tangled clump)

jespák

(variety of wading bird)

potíž

(difficult situation)

suk

(whorl in wood left by branch)

uzel

(looping)

uzel

((mathematics) closed curve)

uzel

(nautical unit of speed)

svraštit

(form wrinkles in forehead)

zauzlovat

(form into a knot; tie with knot(s))