snag

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A rough, sharp, or jagged protuberance, as:
2. n. A tree or a part of a tree that protrudes above the surface in a body of water. Also called sawyer. See Regional Note at preacher.
3. n. A snaggletooth.
4. n. A break, pull, or tear in fabric.
5. n. An unforeseen or hidden obstacle. See Synonyms at obstacle.
6. n. A short or imperfectly developed branch of a deer's antler.
7. v. To tear, break, hinder, or destroy by or as if by a snag: snagged a stocking on a splinter.
8. v. Informal To catch unexpectedly and quickly: snagged a bargain.
9. v. To free of snags: snagged the river.
10. v. To catch (a fish), especially by hooking in a place other than its mouth.
11. v. To be damaged by a snag: His sweater snagged on a tree branch.

Century Dictionary and Cyclopedia

1. n. A sharp protuberance; a projecting point; a jag.
2. n. Specifically A short projecting stump, stub, or branch; the stubby base of a broken or cut-off branch or twig; a jagged branch separate from the tree.
3. n. A tree, or part of a tree, lying in the water with its branches at or near the surface, so as to be dangerous to navigation.
4. n. Hence A hidden danger or obstacle; an unsuspected source or occasion of error or mistake; a stnmbling-block.
5. n. 5. A snag-tooth.
6. n. The fang or root of a tooth.
7. n. A branch or tine on the antler of a deer; a point. See cut under antler.
8. n. plural The fruit of the snag-bush.
9. To catch or run upon a snag: as, to snag a fish-hook; to snag, a steamboat.
10. Figuratively, to entangle; embarrass; bring to a standstill.
11. To fill with snags; act as a snag to.
12. To clear of snags.
13. To trim by lopping branches; cut the branches, knots, or protuberances from, as the stem of a tree.
14. n. A snail.
15. n. In mech., a lug, or projection from a surface, through which there is a hole to receive a bolt or pin.

Wiktionary

1. n. A stump or base of a branch that has been lopped off; a short branch, or a sharp or rough branch; a knot; a protuberance.
2. n. A tooth projecting beyond the rest; a broken or decayed tooth.
3. n. A tree, or a branch of a tree, fixed in the bottom of a river or other navigable water, and rising nearly or quite to the surface, by which boats are sometimes pierced and sunk.
4. n. figuratively A problem or difficulty with something.
5. n. A pulled thread or yarn, as in cloth.
6. n. One of the secondary branches of an antler.
7. v. To catch or tear (e.g. fabric) upon a rough surface or projection.
8. v. fishing To fish by means of dragging a large hook or hooks on a line, intending to impale the body (rather than the mouth) of the target.
9. v. slang To obtain or pick up (something).
10. v. UK, dialect To cut the snags or branches from, as the stem of a tree; to hew roughly.
11. n. UK, dialect, obsolete A light meal.
12. n. A misnaged, an opponent to Chassidic Judaism (more likely modern, for cultural reasons).

GNU Webster's 1913

1. n. A stump or base of a branch that has been lopped off; a short branch, or a sharp or rough branch; a knot; a protuberance.
2. n. A tooth projecting beyond the rest; contemptuously, a broken or decayed tooth.
3. n. A tree, or a branch of a tree, fixed in the bottom of a river or other navigable water, and rising nearly or quite to the surface, by which boats are sometimes pierced and sunk.
4. n. (Zoöl.) One of the secondary branches of an antler.
5. v. Prov. Eng. To cut the snags or branches from, as the stem of a tree; to hew roughly.
6. v. United States To injure or destroy, as a steamboat or other vessel, by a snag, or projecting part of a sunken tree.

WordNet 3.0

1. n. an opening made forcibly as by pulling apart
2. v. hew jaggedly
3. v. get by acting quickly and smartly
4. v. catch on a snag
5. n. an unforeseen obstacle
6. n. a dead tree that is still standing, usually in an undisturbed forest
7. n. a sharp protuberance