noun
round wind tile
In mahjong, the tile that matches the current round wind (e.g., East in the East round). Rare term; more commonly referred to as 場風牌 (バカゼハイ) or simply 場風.
from Chinese quān fēng pái
荘風牌は、その局の親の風に一致する牌です。
The round wind tile is the tile that matches the wind of the dealer in that hand.
From Chinese 圈風牌 (quān fēng pái), meaning 'round wind tile'. The kanji 荘 is used as a variant of 圏 (round) in mahjong contexts.