(transitive) To physically isolate an area or building for security reasons preventing passage of humans or vehicles.

(object-oriented programming, humorous) The diamond problem.

barn owl

(obsolete) To have a settled determination.

Not in good temper; irritated; angry.

(politics, figuratively) The United States of America, as supplier of extensive materiel support to U.S. allies during World War II; or post-war U.S. as the manufacturer and possessor of the greatest quantity of advanced military weaponry in the world, in the service of defending democratic forms of government.

(informal) Actively doing something, or working to solve a (specified) problem.

Used other than figuratively or idiomatically: see bag, shell. / A trifle.

(New England, obsolete, idiomatic) Drunkenness.

(law) A rule in corporate law whereby a firm's shareholders have the right to vote on the remuneration of executives.