collets

Noun

collet (plural collets)

1. 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.
2. The rim (of a ring) within which a jewel is set.
   • There is an almost invisible collet that secures the stone to the ring.

   Synonyms:

   bezel

3. 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.

See all 4 meanings of collet