noun, Bridge, Whist.
the rule that when a player leads his or her fourth-highest card in any suit its numerical value subtracted from eleven gives the number of higher cards of that suit held by the other players.
noun, plural rules of engagement. 1. a directive issued by a military authority controlling the use and degree of force, especially specifying circumstances and limitations for engaging in combat.
noun 1. the principle that all people and institutions are subject to and accountable to law that is fairly applied and enforced; the principle of government by law.
- Rule of outlet
rule of outlet n. A rule for determining whether the pelvic outlet will allow the passage of a normal-sized fetus by calculating whether the sum of the posterior sagittal diameter and the transverse diameter of the outlet equal at least 15 centimeters.
noun, Nautical. 1. any of the regulations concerning the safe handling of vessels under way with respect to one another, imposed by a government on ships in its own waters or upon its own ships on the high seas.