1. (n.) 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.

2. (n.) Hence: The habitual course of life, work, or affairs; fixed routine.

3. (n.) A shaft or excavation.

4. (v. t.) To cut a groove or channel in; to form into channels or grooves; to furrow.

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