Half of an umlaut (3)
I believe the answer is:
dot
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">half of an umlaut</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dot that I've seen before include "Shorter of the two signals used in Morse code" , "Morse symbol; spot" , "Internet punctuation mark" , "Point; speck" , "Absolutely punctual, on it" .)