(slang) To talk in a boastful or overweening manner.

(medicine) A bag used to resuscitate a patient by supplying air or oxygen directly to the trachea and into the lungs.

plural of bag valve mask

(slang) Remarkably stupid.

(slang) Something very special.

(slang) Alternative form of vampire's teabag

Alternative form of have the world by the tail

(obsolete, idiomatic, transitive) To disappoint (someone).

A portable kit containing items needed for short-term survival.

(idiomatic) It is too late.