Unit of capacity (9)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">unit of capacity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for litre that I've seen before include "A pint or two" , "Metric measure of capacity" , "Measure of liquid volume" , "1.7598 UK pints" , "Unit of liquid measure" .)