knag

from The Century Dictionary.

• noun A hook; a peg; a wooden peg for hanging things on.
• noun One of the projecting points of a deer's antler; a snag or tine.
• noun A protuberant knot; a wart; also, a decorative knot or tuft, as in costume.
• noun The rugged top of a rock or hill.

from the GNU version of the Collaborative International Dictionary of English.

• noun A knot in wood; a protuberance.
• noun A wooden peg for hanging things on.
• noun The prong of an antler.
• noun Prov. Eng. The rugged top of a hill.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A short spur or stiff projection from the trunk or branch of a tree, such as the stunted dead branch of a fir
• noun A peg or hook for hanging something on
• noun obsolete One of the points of a stag's horn or a tine
• noun A knot in a piece of wood or the base of a branch
• noun A pointed rock or crag
• noun Scotland A small cask or barrel; a keg or noggin
• noun Scotland, obsolete The woodpecker
• verb To hang something on a peg
• verb To kill (someone) who ganked you