Definitions for pocketknifeˈpɒk ɪtˌnaɪf
Random House Webster's College Dictionary
a knife with one or more blades that fold into the handle, suitable for carrying in the pocket.
pocketknife, pocket knife(noun)
a knife with a blade that folds into the handle; suitable for carrying in the pocket
A small knife whose blades or tools can fold in its handle, and thereby be safely stowed in oneu2019s pocket.
Origin: From pocket + knife.
a knife with one or more blades, which fold into the handle so as to admit of being carried in the pocket