a tree or part of a tree held fast in the bottom of a river, lake, etc., and forming an impediment or danger to navigation.

a short, projecting stump, as of a branch broken or cut off.

any sharp or rough projection.

a jagged hole, tear, pull, or run in a fabric, as caused by catching on a sharp projection.

any obstacle or impediment.

a stump of a tooth or a projecting tooth; snaggletooth.

to run or catch up on a snag.

to damage by so doing.

to obstruct or impede, as a snag does

He snagged all my efforts.

to grab; seize

to snag the last piece of pie.

to become entangled with some obstacle or hindrance.

to become tangled

This line snags every time I cast.

(of a boat) to strike a snag.

to form a snag.