Hitch (3)
'hitch' is the definition.
(snagging is a kind of hitching)
This is the entire clue.
(Other definitions for snag that I've seen before include "Sharp protuberance; catch" , "Jagged projection" , "Minor hitch" , "Hitch, unexpected problem" , "Hitch, obstacle" .)
'hitch' is the definition.
(hitch can mean to tie up)
This is all the clue.
(Other definitions for tie that I've seen before include "Secure (with string)" , "Bind; dead heat" , "Fasten the neckwear" , "Attach, fasten" , "Equal score" .)