1A former duchy of western Germany from which the House of Orange arose.
2A port on the island of New Providence, capital of the Bahamas; population 240,000 (est. 2007).
nounmainly US Golf
An eighteen-hole match in which the players bet on the first nine holes, the second nine holes, and the entire round.
Early 20th century from the name of Nassau Country Club in Nassau County, Long Island, New York State.