Definition
A rack is the stand that holds a player's thirteen tiles upright and hidden, with exposed sets placed on top of it.
Racks with a pusher bar let you push your built wall forward without knocking it over.
Read the full guide: Buying Your First American Mahjong Set: What Actually Matters.
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.