Lincoln (3)
I believe the answer is:
abe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lincoln</span>' is the definition.<br/ ><span class="explanation-format__explanation">(Abraham Lincoln)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for abe that I've seen before include "Lincoln's diminutive" , "President Lincoln was known as Honest ..." , "Lincoln, familiarly" , "Eg, president Lincoln" .)