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
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
C. C. Holland2
: 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
William Nack3
: 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
M. J. TrowExamples of trainer in a Sentence
the boxer and his trainer
She hired a personal trainer.
Recent Examples on the Web
The alt-league plans to provide more development staff and trainers for its athletes while expanding the on-site facility.
—Eric Jackson, Sportico.com, 14 Sep. 2025
Once on the sideline, Sellers removed his helmet and stood with trainers as the first half wound down.
—Ira Gorawara, New York Times, 14 Sep. 2025
But outside of the ring, Christy hides and represses her lesbianism and winds up marrying her trainer Jim Martin (Ben Foster), who manipulates and physically abuses her.
—Edward Segarra, USA Today, 13 Sep. 2025
If your pup is continuously anxious or shows other concerning issues, professional trainers or behaviorists can help ensure your dog's well-being and a smooth adjustment.
—Maria Azzurra Volpe, MSNBC Newsweek, 12 Sep. 2025
See All Example Sentences for trainer
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Eric Jackson, Sportico.com, 14 Sep. 2025
Once on the sideline, Sellers removed his helmet and stood with trainers as the first half wound down.
—Ira Gorawara, New York Times, 14 Sep. 2025
But outside of the ring, Christy hides and represses her lesbianism and winds up marrying her trainer Jim Martin (Ben Foster), who manipulates and physically abuses her.
—Edward Segarra, USA Today, 13 Sep. 2025
If your pup is continuously anxious or shows other concerning issues, professional trainers or behaviorists can help ensure your dog's well-being and a smooth adjustment.
—Maria Azzurra Volpe, MSNBC Newsweek, 12 Sep. 2025
See All Example Sentences for trainer
Cite this Entry
“Trainer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trainer. Accessed 16 Sep. 2025.
Copy CitationKids Definition
trainer
noun
train·er
ˈtrān-ər 
1
: one that trains
2
: a person who treats the minor ailments and injuries of the members of an athletic team
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