white team
Refers to the white team in a competition, especially in contexts like the annual Kōhaku Uta Gassen (Red and White Song Contest) or school sports days where participants are divided into red and white teams.
運動会で白組が勝った。
The white team won at the sports day.
紅白歌合戦では、白組
In the Kōhaku Uta Gassen, the white team consists of male singers.
Compound of 白 (しろ, 'white') and 組 (くみ, 'group, team').