A penknife, or pen knife, is a British English term for a small folding knife. Originally, penknives were used for thinning and pointing quills to prepare them for use as dip pens and, later, for repairing or re-pointing the nib. They did not necessarily have folding blades, but resembled a scalpel or wood knife by having a short, fixed blade at the end of a long handle.
Over the last hundred years there has been a proliferation of multi-function knives with multifarious blades and gadgets, including; awls, reamers, scissors, nail files, corkscrews, tweezers, toothpicks, and so on. The tradition continues with the incorporation of modern devices such as ballpoint pens, LED torches, and USB flash drives.
The most famous example of a multi-function penknife is the Swiss Army knife, some versions of which number dozens of functions and are really more of a folding multi-tool, incorporating a blade or two, than a penknife with extras.
A larger folding knife, especially one in which the blade locks into place, is often called a claspknife.
- A Society of Gentlemen in Scotland (1773). Volume 3. Oxford University: John Donaldson 195 The Strand. p. 524. Retrieved 18 December 2014.
upon your knee with the back of a penknife,
- Moore, Simon (1988). Penknives and Other Folding Knives. Osprey Publishing. pp. 25–26. ISBN 978-0-85263-966-5.
- Shackleford, Steve (5 January 2010). Blade's Guide to Knives & Their Values. Iola, Wisconsin: Krause Publications. pp. 219–222. ISBN 1-4402-1505-7.