noun, plural pen·knives.
Examples from the Web for penknife
He stabbed her twice with a penknife, and one of the wounds was potentially fatal.
Taking his penknife from his pocket he tried again, and cut off the buttons one by one.The Well-Beloved|Thomas Hardy
He laid the washing-book on the table, and taking out his penknife, began to trim his nails.The Moonstone|Wilkie Collins
He quickened his step and opened the blade of the penknife in his pocket as he did so.Reginald Cruden|Talbot Baines Reed
I brushed them away, clicked the penknife into my pocket, made her a bow, and walked off—for the bell was ringing for school.The Christmas Books|William Makepeace Thackeray
I think I expected him to produce an apple and a penknife, but he held out a small object on the palm of his hand.The Window at the White Cat|Mary Roberts Rinehart