"Honest" nickname (3)
I believe the answer is:
abe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">honest nickname</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 abe that I've seen before include "Eg, president Lincoln" , "Lincoln's diminutive" , "Lincoln, familiarly" , "President Lincoln was known as Honest ..." .)