The headword is the neuter plural form of the adjective *Kili/kios, -a, -on, Cilician; cf. LSJ s.v. *Ki/lic. Cilicia (*kiliki/a) is a region of southern Asia Minor (ancient Turkey) on the Mediterranean coast (Barrington Atlas map 66 grid D4), east of Pamphylia (OCD(4) s.v.) and bordering upon Syria; cf. kappa 1606, kappa 1607, kappa 1608.
[1] A close approximation of the gloss appears in Hesychius kappa2676 s.v. *Kili/kioi tra/goi, Cilician billy goats; cf. kappa 1607. [Adler's critical apparatus gives the relevant lemma in Hesychius as *Kili/kioi lo/goi, Cilician accounts, an alternative which Latte notes in his own apparatus.] In modern English (and French), from the Latin cilicium, cilice is a coarse cloth, originally woven from the hair of Cilician goats; cf. OED s.v. cilice. Among early Christians the hairshirt was an ascetic garment, worn for reasons of mortification and penance (Alston s.v. hairshirt at web address 1).