Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

tē̆trarches, ae, m., = τετράρχης, a ruler who governed the fourth part of a country, a tetrarch; in gen., the title of a petty prince, Cic. Att. 2, 9, 1; id. Phil. 11, 12, 31; id. Balb. 5, 13; id. Mil. 28, 76; id. Deiot. 9, 27; Caes. B. C. 3, 3; Sall. C. 20, 7; Vell. 2, 51; Tac. A. 15, 25; Hor. S. 1, 3, 12; Luc. 7, 227; Sid. Ep. 5, 7.
Also tē̆trar-cha, Vulg. Matt. 14, 1; id. Luc. 3, 19.