Gator's kin
I believe the answer is:
'gator's kin' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for croc that I've seen before include "Predatory reptile (abbr)" , "that might be sitting on your foot" , "Fierce beast" , "Reptile (abbrev.)" , "Short reptile" .)