Dwindle; earmark (4)
I believe the answer is:
flag
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">dwindle</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">earmark</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for flag that I've seen before include "Plant; paving slab" , "National standard" , "National emblem; tire" , "slow down" , "Standard; tire" .)