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knob lock

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noun

a lock having a spring bolt moved by a knob or knobs, and a dead bolt moved by a key.

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Let’s start with some etymology: What are the origins of the typographical word “bracket”?

Origin of knob lock

First recorded in 1805–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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