To grimace; to snarl.
To make elaborate unnatural and distorted faces as a form of amusement or in a girning competition.
To whinge, moan, complain.
A vocalization similar to a cat's purring.
To snarl or growl; to gnar.
To knot or twist something.
Gnarled, knotty, twisted.
A knot in wood; a large or hard knot, or a protuberance with twisted grain, on a tree.
Something resembling a knot in wood, such as in stone or limbs.