catch or tear (something) on a sharp projection

thorns snagged his sweater

catch or obtain

it's the first time they've snagged the star for a photo

an unexpected or hidden obstacle or drawback

there's one small snag

a sharp, angular, or jagged projection

keep an emery board handy in case of nail snags

a dead tree

dozens of species of birds and mammals use standing snags for nesting

a sausage

I make my own snags, my own pies and pasties