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 film also explores Martin’s troubled relationship with her boxing trainer and husband, Jim Martin (Ben Foster).
—Ashley Hume, FOXNews.com, 7 Sep. 2025
With experience dating to 2009, Thomas is one of the longest-serving dolphin trainer on staff.
—Teri Figueroa, San Diego Union-Tribune, 7 Sep. 2025
Head trainer Dustin Little kept an eye on McCaffrey, but neither Shanahan nor general manager John Lynch fixated on McCaffrey and casually chatted nearby.
—Cam Inman, Mercury News, 6 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.
—Brian Truitt, USA Today, 5 Sep. 2025
See All Example Sentences for trainer
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Ashley Hume, FOXNews.com, 7 Sep. 2025
With experience dating to 2009, Thomas is one of the longest-serving dolphin trainer on staff.
—Teri Figueroa, San Diego Union-Tribune, 7 Sep. 2025
Head trainer Dustin Little kept an eye on McCaffrey, but neither Shanahan nor general manager John Lynch fixated on McCaffrey and casually chatted nearby.
—Cam Inman, Mercury News, 6 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.
—Brian Truitt, USA Today, 5 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 9 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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