or CHILO, a Roman surname, seems to have been written in either way, as we find both forms on coins of the Flaminia gens. (Eckhel, v. p. 212.) The Latin grammarians, however, state that Cilo was applied to a person with a long and narrow head, and Chilo to one with large or thick lips. (Velius Long. p. 2234, Flav. Caper, p. 2242, Charis. p. 78, ed. Putschius; Festus, s. v. Chilo.)
A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890