1. (Jewellery) (in a jewellery setting) a band or coronet-shaped claw that holds an individual stone
2. (Mechanical Engineering) mechanical engineering an externally tapered sleeve made in two or more segments and used to grip a shaft passed through its centre when the sleeve is compressed by being inserted in a tapered hole
3. (Horology) horology a small collar that supports the inner end of the hairspring
vb
(Jewellery) (tr) jewellery to mount in a collet
[C16: from Old French: a little collar, from col neckband, neck, from Latin collum neck]
Wrth i ni gerdded o'r maes parcio am y traeth roedd ehedydd yn troelli a chanu uwchben ac roedd angen oedi am ennyd ar y twyni tywod i weld gwenyn turio'r gwanwyn (Colletes cunicularis; vernal mining bees).
The area, which spans from Gronant Dunes to Talacre Warren, is home to a wealth of rare animals and birds, including the natterjack toad, sand lizards, colletes bees and terns.
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