Crocodilian (6)
I believe the answer is:
cayman
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crocodilian</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that cayman is a type of crocodilian)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for cayman that I've seen before include "Alligator-like reptile; Amy can (anagram)" , "Type of crocodile and Caribbean islands" , "Member of crocodile family" , "Alligator - island" , "Crocodilian animal" .)