Limitless quantity (3)
I believe the answer is:
sea
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">limitless quantity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sea that I've seen before include "Division of an ocean" , "E.g. Baltic" , "Ocean area" , "& 14 Ozone" , "Caspian, e.g." .)