Definition of rut noun from the Oxford Advanced Learner's Dictionary

     

    rut

     noun
    noun
    BrE BrE//rʌt//
     
    ; NAmE NAmE//rʌt//
     
    Boredom
     
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  1. 1[countable] a deep track that a wheel makes in soft ground It was difficult to walk in the muddy ruts left by the tractor.
  2. 2[countable] a boring way of life that does not change I gave up my job because I felt I was stuck in a rut. If you don't go out and meet new people, it's easy to get into a rut. See related entries: Boredom
  3. 3[uncountable] (also the rut) the time of year when male animals, especially deer, become sexually active stags fighting during the rut
  4. see also rutted, rutting
    Word Origin senses 1 to 2 late 16th cent.: probably from Old French rute ‘road’, from Latin rupta (via) ‘broken (way)’, feminine past participle of rumpere. sense 3 late Middle English: from Old French, from Latin rugitus, from rugire ‘to roar’.Extra examples I’d got into a rut, cooking the same things week after week. Moving abroad gave her the chance to get out of a rut. My job bores me—I feel I’m in a rut.
See the Oxford Advanced American Dictionary entry: rut