Thesaurus

(n) : a knot or complication of hair, thread, or the like, difficult to disentangle; entanglement; hence, intricate complication; embarrassing difficulty; the act of snarling; a growl; a surly or peevish expression; an angry contention

(v) : to form raised work upon the outer surface of (thin metal ware) by the repercussion of a snarling iron upon the inner surface; to entangle; to complicate; to involve in knots; as, to snarl a skein of thread