1a. an impudent or conceited fellow b. a saucy or mischievous child 2. a monkey or an ape

This word appears in C.S. Lewis’s book Prince Caspian, which I’ve been reading to Ben for the past couple weeks: ” ‘There!’ he growled, flinging the parchment across the table to them. ‘See what a pack of nursery tales our jackanapes of a nephew has sent us.’ ”