the world > animals > animal body > general parts > head and neck > [adjective] > having ears > having prick-ears > of ears: pricked up (4)
Of the ears of an animal: pricked up; erect and pointed.
Of the ears of an animal (esp. a dog): erect and pointed; upright; cocked up.
(of a surface) scratched or scored to provide a hold for a (further) layer of plaster. See prick, v. 18.