1. [ noun ] a groove or furrow (especially one in soft earth caused by wheels)
Related terms: groove furrow
2. [ noun ] a settled and monotonous routine that is hard to escape
Synonyms: groove

"they fell into a conversational rut"

Related terms: routine
3. [ verb ] hollow out in the form of a furrow or groove
Synonyms: furrow groove

"furrow soil"

Related terms: dig groove furrow
4. [ verb ] be in a state of sexual excitement; of male mammals
Related terms: be estrus
5. [ noun ] (biology) applies to nonhuman mammals: a state or period of heightened sexual arousal and activity
Synonyms: heat oestrus estrus
Related terms: anestrus physiological_state
Similar spelling:   Rutt