penknife [
'pennaif]
n. 袖珍折刀
penknifepenknives[ noun ]
a small pocketknife; originally used to cut quill pens
<noun.artifact>
Penknife \Pen"knife`\, n.; pl. {Penknives}. [Pen + knife.]
A small pocketknife; formerly, a knife used for making and
mending quill pens.