noun 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.
That collet can handle up to 3/8-inch bits.
noun The rim (of a ring) within which a jewel is set.
There is an almost invisible collet that secures the stone to the ring.
noun In an embryonic plant, the transition zone between the root and the hypocotyl (not clearly distinguishable in most plants.)
Collar rot forms in the collet between the stem and the root.
noun Alternative form of colet (“lower servant in a church”).