Hand digit (6)
(Other definitions for finger that I've seen before include "Touch; select" , "Fringe (anag.)" , "Slender part attached to the hand" , "shop" , "amount of drink" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hand digit</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 thumb that I've seen before include "First digit" , "The hand's pollex" , "Attempt to obtain a lift" , "Opposable digit" , "Hand digit" .)