toolholder

noun
tool·​hold·​er | \ ˈtül-ˌhōl-dər How to pronounce toolholder (audio) \

Definition of toolholder

: a short steel bar having a shank at one end by which it is clamped to a machine and a clamp at the other end to hold small interchangeable cutting bits

First Known Use of toolholder

1846, in the meaning defined above

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