Liddell-Scott-Jones

κέρκος (kerkos) a tail ^G:N-F

κέρκος, ἡ,

tail of a beast (not a bird), e.g. swine, [Refs 5th c.BC+]; κ. λαγῶ a hare's scut, [Refs]; horse, [Refs 5th c.BC+]; of all sorts of beasts, [Refs 4th c.BC+]; of fishes, [Refs]; ἡ κ. ποιεῖ καλῶς, of omens in sacrificing, [Refs 5th c.BC+]

__2 membrum virile, [Refs 5th c.BC+]; of an animal, κ. βοός, used as a tawse, [Refs]
__II handle, [Refs 2nd c.AD+]
__III small animal that injures the vine, [Refs 5th c.AD+]
__III.2 = {ἀλεκτρυών}[Refs]
__IV tongue of flame, [Refs 5th c.BC+]