The most complete glossary of backgammon terms
Equity gained or lost through the rolls of the dice during the course of a game or match. The luck associated with a roll is the difference in equity of the position before the roll and the (properly played) position after the roll. See posts by Gregg Cattanach and Adam Stocks.
American Backgammon Tour, an annual master-point competition of participants in major U.S. tournaments. Website: ABT.