Where does “Collet” come from?

Collet derives from English Coll, a diminutive of English Nicholas, from Middle English Nicholas, Old French Nicholas, Latin Nicolaus, and Ancient Greek Νικόλαος, composed of νίκη meaning victory and λαός meaning people.

Collet (English): A band, flange, ferrule, or collar, designed to grip and hold a tool or a workpiece under proper control, and usually to release it under control thereafter; such a collet usually is made of a hard, springy material, especially a metal