1) Army knife 2) Camping equipment 3) Camping knife 4) Flick knife 5) Handy gadget for campers 6) Handy-dandy tool 7) Knife 8) Mumblety-peg need 9) Penknife 10) Pocket knife 11) Pocket knife 12) Twig-cutting tool 1) Jackknife 2) Penknife 3) Switchblade 
• (n.) A knife with one or more blades, which fold into the handle so as to admit of being carried in the pocket.
Pock'et·knife` noun ; plural -knives A knife with one or more blades, which fold into the handle so as to admit of being carried in the pocket. 
[n] - a knife with a blade that folds into the handle
pocket knife noun a knife with a blade that folds into the handle; suitable for carrying in the pocket