trainer
US /ˈtreɪ.nɚ/
UK /ˈtreɪ.nɚ/

1.
treinador, instrutor
a person who teaches or coaches athletes or animals
:
•
The horse's trainer prepared it for the race.
O treinador do cavalo o preparou para a corrida.
•
She works as a personal trainer at the gym.
Ela trabalha como personal trainer na academia.
2.
tênis, sapatilha
a type of soft sports shoe suitable for general wear
:
•
He put on his new running trainers.
Ele calçou seus novos tênis de corrida.
•
My old trainers are worn out.
Meus tênis velhos estão gastos.