Muzzle (3)
'muzzle' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for snout that I've seen before include "Schnozzle" , "Animal's muzzle" , "Pig's nose" , "Muzzle; Wall (MND)" , "Nose; tobacco (slang)" .)
'muzzle' is the definition.
(synonyms)
This is all the clue.
(Other definitions for gag that I've seen before include "Joke or muffler - a palindrome" , "Palindromic muxxle" , "Stop someone telling" , "Part of stand-up routine" , "Prevent from speaking freely" .)