Lewis & Short

Lāĭus or Lajus, i (voc. Lai, Stat. Th. 7, 355), m., = Λάιος, son of Labdacus, king of Thebes, and father of Œdipus, Cic. Tusc. 4, 33, 71; id. Fat. 13, 30; Stat. Th. 2, 7; 66.
Hence, Lāĭădes, ae, m., a male descendant of Laius, i. e. Œdipus, Ov. M. 7, 759.