expression, godan verb (-ru)
form a circle; gather in a circle
Describes people or things coming together to make a circular shape. Often used for group activities, games, or discussions.
みんなで輪になって座りましょう。
Let's all sit in a circle.
子どもたちが輪になって遊んでいる。
The children are playing in a circle.
輪 is the noun 'circle' or 'ring'; 輪になる is the verb phrase meaning 'to form a circle'.
Compound of 輪 (wa, 'circle') + に (ni, particle) + なる (naru, 'to become'), literally 'to become a circle'.