A cheeky or impertinent person.
Early 16th century (originally as Jack Napes): perhaps from a playful name for a tame ape, the initial n- by elision of an ape (compare with newt), and the final -s as in surnames such as Hobbes: applied to a person whose behaviour resembled that of an ape.
“The grinning jackanapes is unstoppable and half mad with power.”
A pale golden or tan-coloured horse or pony with a white mane and tail, originally bred in the south-western US.
Early 20th century: from Latin American Spanish, from Spanish palomino ‘young pigeon’, from Latin palumbinus ‘resembling a dove’.