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thumbpiece

noun

Definition of thumbpiece

1 : an appendage to a handle (as of a vessel) to afford a hold for the thumb
2 : a part designed to be operated by the thumb or thumb and fingers: such as
a : a small inside knob for a night latch
b : a small knob or button to operate a catch (as on a bracelet)
3 dialectal : a small amount of food

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