Large croaker (8)
I believe the answer is:
bullfrog
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large croaker</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bullfrog that I've seen before include "Booming croaker" , "Large croaker" , "Deep-booming croaker" , "Noisy amphibian" , "pond life" .)