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collet

noun
col·​let | \ ˈkä-lət How to pronounce collet (audio) \

Definition of collet

: a metal band, collar, ferrule, or flange: such as
a : a casing or socket for holding a tool (such as a drill bit)
b : a circle or flange in which a gem is set

First Known Use of collet

1528, in the meaning defined above

History and Etymology for collet

Middle French, diminutive of col collar, from Latin collum neck — more at collar

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The first known use of collet was in 1528

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