sparring partner
US /ˈspɑːr.ɪŋ ˌpɑːrt.nər/
UK /ˈspɑːr.ɪŋ ˌpɑːrt.nər/

1.
compañero de sparring, sparring
a person with whom one spars in training, especially in boxing or martial arts
:
•
The boxer trained with his sparring partner every day.
El boxeador entrenaba con su compañero de sparring todos los días.
•
She needs a strong sparring partner to improve her technique.
Necesita un compañero de sparring fuerte para mejorar su técnica.
2.
compañero de debate, interlocutor
a person with whom one argues or debates, especially to sharpen one's own arguments or ideas
:
•
He considers his colleague a valuable sparring partner for new ideas.
Considera a su colega un valioso compañero de debate para nuevas ideas.
•
The CEO often uses his advisors as sparring partners to test strategies.
El CEO a menudo utiliza a sus asesores como compañeros de debate para probar estrategias.