Pocket blade (8)
I believe the answer is:
penknife
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pocket blade</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for penknife that I've seen before include "Handy little gadget" , "A Swiss army one has several blades and many tools" , "Small pocket cutting tool" , "Small folding pocket blade" , "What may be used for carving" .)