Gentle stroke; tap (3)
I believe the answer is:
pat
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">gentle stroke</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">tap</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that tap can be written as pat)</span><br/ ><br/ ></span>
(Other definitions for pat that I've seen before include "Light hand stroke" , "Conveniently; light touch" , "Slick; dab" , "Touch gently; glib" , "Glib; touch affectionately" .)