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



    BrE BrE//ˈtreɪnə(r)//
    ; NAmE NAmE//ˈtreɪnər//
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  1. 1 (also training shoe) (both British English) (North American English sneaker) [usually plural] a shoe that you wear for sports or as informal clothing a pair of trainers see also cross-trainer See related entries: Footwear
  2. 2a person who teaches people or animals to perform a particular job or skill well, or to do a particular sport teacher trainers a racehorse trainer Her trainer had decided she shouldn't run in the race. see also personal trainer
  3. Extra examples Her trainer was on hand to give some advice. Only rich people can afford a personal trainer. There was a shortage of teacher trainers. a dog/​racehorse trainer
See the Oxford Advanced American Dictionary entry: trainer