Number — finger (5)
I believe the answer is:
digit
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">number</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(digit is a kind of number)</span><br/ ><br/ >'<span class="explanation-format__original">finger</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that finger can be written as digit)</span><br/ ><br/ ></span>
(Other definitions for digit that I've seen before include "that's on hand" , "One's on hand" , "One in ten, say" , "using 0 or 1 for example" , "Finger, thumb or toe" .)