Lewis & Short

Archĭlŏchus, i, m., = Ἀρχίλοχος, a Greek poet of Paros, who, acc. to Cic. Tusc. 1, 1, 3, lived in the age of Romulus; but, acc. to Nep. ap. Gell. 17, 21, 8, was a contemporary of Tullus Hostilius; he was the originator of iambic verse, and the author of very bitter satires, Hor. Ep. 1, 19, 23 sq.; id. A. P. 79; cf. Quint. 10, 1, 60.
Hence, Archĭ-lŏchīus, a, um, adj., Archilochian: metrum, Diom. p. 509 sq. P.; Serv. Centim. p. 1819 sq. P.; also an appel. for severe, bitter, acrimonius: edicta, Cic. Att. 2, 21.