n.
a mischievous child.
▸a small, mischievous devil or sprite.
v.
repair a damaged feather in (the wing of a trained hawk) by attaching part of a new feather.
Etymology
OE (in ME denoting a descendant of the devil or an evil person): impa, impe ‘young shoot, scion’, from impian ‘to graft’, based on Gk emphuein ‘to implant’.