This is the 2878th most frequent Russian word.
боевым
"Боевым" means "combat" or "battle" (adjective form).
Here, 'боевым' describes someone who has participated in battles, indicating their camaraderie and shared experiences.
Он был боевым товарищем.
He was a comrade in arms.
In this context, 'боевым' refers to the spirited and courageous attitude associated with fighting and determination.
Его боевым духом восхищались все.
Everyone admired his fighting spirit.
'Боевым' here describes skills that are related to fighting or combat, which are applied metaphorically in a sport context.