Cilo
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.)