Porgy and bass (4)
I believe the answer is:
fish
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">porgy and bass</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fish that I've seen before include "Aquatic animal(s)" , "counter in various games" , "Customer" , "To try to catch" , "Aquatic creature; rail-joining plate" .)