air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water
a device for showing the operating condition of some system
a signal for attracting attention
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
a figurative restraint; "asked for a collar on program trading in the stock market"; "kept a tight leash on his emotions"; "he's always gotten a long leash"
a band that fits around the neck and is usually folded over
a band of leather or rope that is placed around an animal's neck as a harness or to identify it
the stitching that forms the rim of a shoe or boot
take into custody; "the police nabbed the suspected criminals"
a strong rod or stick with a specialized utilitarian purpose; "he walked with the help of a wooden staff"
(music) the system of five horizontal lines on which the musical notes are written
a rod carried as a symbol
the body of teachers and administrators at a school; "the dean addressed the letter to the entire staff of the university"
personnel who assist their superior in carrying out an assigned task; "the hospital has an excellent nursing staff"; "the general relied on his staff to make routine decisions"
building material consisting of plaster and hair; used to cover external surfaces of temporary structure (as at an exposition) or for decoration
provide with staff; "This position is not always staffed"
serve on the staff of; "The two men staff the reception desk"
armament consisting of a long cylindrical self-propelled underwater projectile that detonates on contact with a target
a small explosive device that is placed on a railroad track and fires when a train runs over it; the sound of the explosion warns the engineer of danger ahead
a small firework that consists of a percussion cap and some gravel wrapped in paper; explodes when thrown forcefully against a hard surface
an explosive device that is set off in an oil well (or a gas well) to start or to increase the flow of oil (or gas)
a grant made by a law court; "he criticized the awarding of compensation by the court"
a tangible symbol signifying approval or distinction; "an award for bravery"
give, especially as an honor or reward; "bestow honors and prizes at graduation"
give as judged due or on the basis of merit; "the referee awarded a free kick to the team"; "the jury awarded a million dollars to the plaintiff";"Funds are granted to qualified researchers"
a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon; "there were bars in the windows to prevent escape"
an obstruction (usually metal) placed at the top of a goal; "it was an excellent kick but the ball hit the bar"
a counter where you can obtain food or drink; "he bought a hot dog and a coke at the bar"
(law) a railing that encloses the part of the courtroom where the judges and lawyers sit and the case is tried; "spectators were not allowed past the bar"
a heating element in an electric fire; "an electric fire with three bars"
a horizontal rod that serves as a support for gymnasts as they perform exercises
a submerged (or partly submerged) ridge in a river or along a shore; "the boat ran aground on a submerged bar in the river"
(meteorology) a unit of pressure equal to a million dynes per square centimeter; "unfortunately some writers have used bar for one dyne per square centimeter"
prevent from entering; keep out; "He was barred from membership in the club"
secure with, or as if with, bars; "He barred the door"