Snitch receiving last bit of info that could be breath-taking? (5)
I believe the answer is:
noose
But I can't explain it at all! Could you help me understand?
(Other definitions for noose that I've seen before include "Catch" , "Hanging loop in rope" , "A loop for the hangman" , "old execution method" , "Loop in a rope made with a slip knot" .)