n. A small pocketknife; a small knife with a blade which folds into the hand. Penknives often incorporate other tools such as corkscrews, and are generally smaller than pocketknives as a group.
the GNU version of the Collaborative International Dictionary of English
n. A small pocketknife; formerly, a knife used for making and mending quill pens.
The Century Dictionary and Cyclopedia
n. A small pocket-knife: so called from its former use in making and mending quill pens.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a small pocketknife; originally used to cut quill pens
Word Usage
"But his penknife was a tiny thing, suitable for sharpening quills and cutting paper, not to doing battle with monstrous stone dogs."