Rut

What is Rut ?

Rut is (noun) 1. a deep track made in soft earth by the wheels of vehicles The front wheel of the car was stuck in a deep rut. 2. to get into a rut to start to lead a dull life with no excitement (informal.) Go out, see friends, travel don’t allow yourself to get into a rut.

 

source: Easier English, Student Dictionary Upper Intermediate Level