Swim (5)
I believe the answer is:
bathe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">swim</span>' is the definition.<br/ ><span class="explanation-format__explanation">(bathe can mean to swim)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bathe that I've seen before include "Go swimming" , "Wash; swim" , "Bask" , "Steep" , "Immerse in liquid for wash" .)