train·​er | \ ˈtrā-nər How to pronounce trainer (audio) \

Definition of trainer

1 : a person who trains someone or something: such as
a : one whose occupation is to guide or instruct people in fitness and exercise routines a personal trainer When we run the track, Stan Ward, a boxing and conditioning trainer, times us.— Bridgett Riley
b : one who oversees the training of animals a dog/horse trainer A trainer uses the clicker to create an auditory cue that marks a particular behavior and then rewards the dog with a treat.— C. C. Holland
2 : a person who treats the ailments and minor injuries of the members of an athletic team … he landed so hard that the wind was knocked out of him. He lay writhing on the ground as Herm Schneider, the team trainer, rushed to his side.— William Nack
3 : something (such as a machine or vehicle) used in training — see also elliptical trainer
4 chiefly British : sneaker sense 2 They wore trainers, scuffed and old, with the laces loose and the tongues protruding in defiance at the ankle.— M. J. Trow

Keep scrolling for more

Synonyms for trainer



Visit the Thesaurus for More 

Examples of trainer in a Sentence

the boxer and his trainer She hired a personal trainer.

Recent Examples on the Web

During his win Wednesday, Djokovic was visited several times by a trainer for treatment on his painful left shoulder. Washington Post, "After US Open win, Federer bristles at idea he chose timing," 30 Aug. 2019 Pillar was checked by a trainer and stayed in the game. John Shea,, "Giants’ Bumgarner dominates Padres; homers from Belt, Yastrzemski," 30 Aug. 2019 During his win Wednesday, Novak Djokovic was visited several times by a trainer for treatment on his painful left shoulder. Howard Fendrich,, "Roger Federer takes quick route to fourth round," 30 Aug. 2019 Miller was carted off the field after getting attended to by trainers. Aaron Wilson, Houston Chronicle, "Texans' Lamar Miller carted off with knee injury," 24 Aug. 2019 The West Coast Handicapping Report can be found at It has been endorsed by leading trainers, handicappers and industry sources. Los Angeles Times, "Racing! Looking at next year’s Kentucky Derby preps," 24 Aug. 2019 Machado singled on pop fly into center field that resulted in Galvis, the Reds’ new second baseman, being run over by center fielder Nick Senzel and being tended to by an athletic trainer before remaining in the game. San Diego Union-Tribune, "Freddy Galvis, Reds strike back at Padres," 20 Aug. 2019 LB Josh Watson was attended to by trainers midway through practice but returned to team work. The Denver Post, "Broncos host 49ers: Live updates from Aug. 17 practice at UC Health Training Center," 18 Aug. 2019 Jackson struggled to stand before he was placed on a cart and driven toward the field house and weight area where he was checked out by trainers. Jerry Mcdonald, The Mercury News, "Raiders’ Gabe Jackson out approximately two months with MCL injury," 8 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'trainer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of trainer

1543, in the meaning defined at sense 1

Keep scrolling for more

Learn More about trainer

Statistics for trainer

Last Updated

2 Sep 2019

Look-up Popularity

Time Traveler for trainer

The first known use of trainer was in 1543

See more words from the same year

Keep scrolling for more

More Definitions for trainer



English Language Learners Definition of trainer

: a person who teaches or coaches athletes or animals : a person who trains athletes or animals
US : a person who treats the injuries of the members of a sports team

Keep scrolling for more

Comments on trainer

What made you want to look up trainer? Please tell us where you read or heard it (including the quote, if possible).


readily or continually undergoing change

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!