Definition
The winds are the sixteen tiles marked north, east, west, and south, four of each, used as honor tiles in many card lines.
On the card they appear as N, E, W, and S.
Read the full guide: American Mahjong Tiles, Explained: All 152, Suit by Suit.
See it on real tiles: the coach reads any hand and names its direction, free, at the free read. Members get the coach on call for their own games.
More terms: Pung, Kong, Quint, Pair, Charleston, Blind pass, Courtesy pass, Joker.