χαλινός

Etymology
According to Beekes, a origin is probable, as it is difficult to explain "χαλ-" from Indo-European and as a suffix "-ιν-" is frequent in Pre-Greek.

Noun

 * 1) bridle, rein, bit
 * 2) part of the tackle of a ship
 * 3) anything that restrains from the outer
 * 4) corner of the mouth of a horse or human
 * 1) corner of the mouth of a horse or human

Noun

 * 1) frenulum
 * 1) frenulum