Kiloran_speaking has given the best term most people would refer to the loop or a loose thread on clothing as a snagged loop or snagged tread, however to allow for those that use the alternative term.

I am offering "pull" or "pulled loop" or pulled thread as used here

"a snag is just a pulled loop in the knitted pattern"

Kiloran_speaking has given the best term most people would refer to the loop or a loose thread on clothing as a snagged loop or snagged tread, however to allow for those that use the alternative term. The two are often synonymous

I am offering "pull" or "pulled loop" or pulled thread as used here

"a snag is just a pulled loop in the knitted pattern"