Pocket blade (8)
I believe the answer is:
penknife
'pocket blade' is the definition.
(I've seen this before)
This is all the clue.
(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" .)