01 n. A furrow, channel, or long hollow, such as may be formed by cutting, molding, grinding, the wearing force of flowing water, or constant tra…
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1.
A furrow, channel, or long hollow, such as may be formed by cutting, molding, grinding, the wearing force of flowing water, or constant travel; a depressed way; a worn path; a rut.
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2.
Hence: The habitual course of life, work, or affairs; fixed routine.“The gregarious trifling of life in the social groove.” — J. Morley.
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3.
A shaft or excavation.(Mining) [Prov. Eng.]