snag

An unforeseen obstacle.

An opening made forcibly as by pulling apart.

“she had snags in her stockings”

A dead tree that is still standing, usually in an undisturbed forest.

“a snag can provide food and a habitat for insects and birds”

A sharp protuberance.

Catch on a snag.

“I snagged my stocking”

Get by acting quickly and smartly.

“snag a bargain”

Hew jaggedly.