Definition of "pecker"
pecker
/ˈpɛkə(ɹ)/
noun
plural peckers
Someone who or something that pecks, striking or piercing in the manner of a bird's beak or bill, particularly:
(zoology) A bird, particularly a member of the group including the woodpeckers, flowerpeckers, oxpeckers, and berrypeckers.
(zoology, usually colloquial or US regional) Clipping of woodpecker (Picidae).
(chiefly in the plural, derogatory slang) Short for peckerhead ("dickhead; an aggressive or objectionable idiot").