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English definition of “trainer”

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trainer

noun uk   /ˈtreɪ.nər/ us    /-nɚ/

trainer noun (PERSON)

B1 [C] a person who teaches skills to people or animals and prepares them for a job, activity, or sport: They showed pictures of the horse and its trainer (= the person who prepared it for its races). A lot of wealthy people have their own personal trainer (= a person they employ to help them exercise).
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trainer noun (SHOE)

A2 [C usually plural] UK ( UK also training shoe, US sneaker) a type of light, comfortable shoe that is suitable for playing sport
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(Definition of trainer from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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