Casually throw (5)
I believe the answer is:
chuck
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">casually throw</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 chuck that I've seen before include "Hurl" , "Give up" , "Type of steak" , "Casually throw" , "beef" .)