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
D'Amato, who lost his Senate seat in 1998 to Minority Leader Chuck Schumer (D-N.Y.), filibustered for 23 hours and 30 minutes over an amendment to a bill that would nix financing for a jet trainer aircraft.
—Avery Lotz, Axios, 1 Apr. 2025
The Brewers’ trainer then made another mound visit, only for Cortes to stay in as nearly every person in Milwaukee’s bullpen began to stretch.
—Gary Phillips, Hartford Courant, 29 Mar. 2025
Amp, which launched sales in January, has hired a dozen or so fitness influencers and minor celebrities as trainers, the most famous of whom is America’s Got Talent host Terry Crews.
—Danielle Chemtob, Forbes.com, 28 Mar. 2025
After an extensive nationwide search with the help of trainer Bill Berloni and producer Mike Spreter, the production chose Iowa native Bing after meeting more than 30 dogs.
—Tomris Laffly, IndieWire, 27 Mar. 2025
See All Example Sentences for trainer
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Avery Lotz, Axios, 1 Apr. 2025
The Brewers’ trainer then made another mound visit, only for Cortes to stay in as nearly every person in Milwaukee’s bullpen began to stretch.
—Gary Phillips, Hartford Courant, 29 Mar. 2025
Amp, which launched sales in January, has hired a dozen or so fitness influencers and minor celebrities as trainers, the most famous of whom is America’s Got Talent host Terry Crews.
—Danielle Chemtob, Forbes.com, 28 Mar. 2025
After an extensive nationwide search with the help of trainer Bill Berloni and producer Mike Spreter, the production chose Iowa native Bing after meeting more than 30 dogs.
—Tomris Laffly, IndieWire, 27 Mar. 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 7 Apr. 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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