Definition of hobby horse noun from the Oxford Advanced Learner's Dictionary


    hobby horse

    BrE BrE//ˈhɒbi hɔːs//
    ; NAmE NAmE//ˈhɑːbi hɔːrs//
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  1. 1(sometimes disapproving) a subject that somebody feels strongly about and likes to talk about to get on your hobby horse (= talk about your favourite subject)
  2. 2a toy made from a long stick that has a horse’s head at one end. Children pretend to ride on it.