Spillane's Hammer (4)
I believe the answer is:
mike
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">spillane's hammer</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 mike that I've seen before include "T [Thespian] Reid" , "letter in code" , "that helps speaker to be heard" , "Boy's name; piece of recording equipment" , "Man" .)