"M*A*S*H" actor (4)
I believe the answer is:
alda
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mash actor</span>' is the definition.<br/ ><span class="explanation-format__explanation">(Alan Alda, star of M*A*S*H)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for alda that I've seen before include "American actor" , "Alan ---, M.A.S.H. actor" .)