1. (

• rut

) a groove or furrow (especially one in soft earth caused by wheels) ;

2. (

• rut ,
• groove

) a settled and monotonous routine that is hard to escape; "they fell into a conversational rut" ;

3. (

• estrus ,
• oestrus ,
• heat ,
• rut

) applies to nonhuman mammals: a state or period of heightened sexual arousal and activity ;

1. (

• rut

) be in a state of sexual excitement; of male mammals ;

2. (

• furrow ,
• rut ,
• groove

) hollow out in the form of a furrow or groove; "furrow soil" ;