Eisenhower nickname (3)
I believe the answer is:
ike
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">eisenhower nickname</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ike that I've seen before include "Nickname for Dwight Eisenhower" , "President Eisenhower's nickname" , "Nickname of old US president" , "Former US President (informally)" , "Dwight D. Eisenhower, in short" .)