This is the 10295th most frequent Russian word.
братьев
"Братьев" means "brothers" (genitive or accusative plural) in English.
The word 'братьев' is in the genitive plural case, indicating possession or relationship.
Я встретил своих старших братьев на вокзале.
I met my older brothers at the train station.
Here, 'братьев' is used in the genitive plural case to indicate the absence of brothers.
У меня нет братьев, только сестры.
I don't have any brothers, only sisters.
The word 'братьями', is the instrumental plural case to show accompanying action.