Skin inking (6)
I believe the answer is:
tattoo
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">skin inking</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tattoo that I've seen before include "Skin painting" , "Edinburgh military parade" , "personal adornment?" , "Drum signal; skin marking" , "Skin design - military entertainment" .)