a furrow or track in the ground, esp. one made by the passage of a vehicle or vehicles.

any furrow, groove, etc.

a fixed or established mode of procedure or course of life, usually dull or unpromising

to fall into a rut.

to make a rut or ruts in; furrow.

noun

closing , break , difference

noun

furrow , gouge , hollow , pothole , rabbet , score , track , trench , trough , circle , circuit , course , custom , daily grind , dead end * , grind * , groove , habit , humdrum * , pace , pattern , performance , practice , procedure , rote , round , system , treadmill , usage , wont , routine , estrus , season , channel , ditch , grind , indentation , roaring (of waves)