a book containing the forms of worship used in divine services.
noun, Tennis. 1. an instance of a player winning a game against a server. 2. a game won against an opponent’s service.
noun, Military. 1. a saucer-shaped uniform cap with a visor, standard in the U.S. Army and Air Force.
- Service ceiling
noun 1. the height above sea level, measured under standard conditions, at which the rate of climb of an aircraft has fallen to a specified amount Compare absolute ceiling
noun 1. an authorized commercial establishment for repairs and replacement parts for appliances or cars.