LSJ
ὁ, the Three-headed, a satirical attack on three cities, Sparta, Athens, and Thebes, written by Anaximenes of Lampsacus (Frr. 20 and 21 J.) and ascribed by him to Theopompus, Paus. 6.18.5, Luc. Pseudol. 29, Fug. 32; also a satire by Varro on the coalition of Caesar, Pompeius, and Crassus, App. BC 2.9.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)