Definition of pipe

• n. - A wind instrument of music, consisting of a tube or tubes of straw, reed, wood, or metal; any tube which produces musical sounds; as, a shepherd's pipe; the pipe of an organ.
• n. - Any long tube or hollow body of wood, metal, earthenware, or the like: especially, one used as a conductor of water, steam, gas, etc.
• n. - A small bowl with a hollow steam, -- used in smoking tobacco, and, sometimes, other substances.
• n. - A passageway for the air in speaking and breathing; the windpipe, or one of its divisions.
• n. - The key or sound of the voice.
• n. - The peeping whistle, call, or note of a bird.
• n. - The bagpipe; as, the pipes of Lucknow.
• n. - An elongated body or vein of ore.
• n. - A roll formerly used in the English exchequer, otherwise called the Great Roll, on which were taken down the accounts of debts to the king; -- so called because put together like a pipe.
• n. - A boatswain's whistle, used to call the crew to their duties; also, the sound of it.
• n. - A cask usually containing two hogsheads, or 126 wine gallons; also, the quantity which it contains.
• v. i. - To play on a pipe, fife, flute, or other tubular wind instrument of music.
• v. i. - To call, convey orders, etc., by means of signals on a pipe or whistle carried by a boatswain.
• v. i. - To emit or have a shrill sound like that of a pipe; to whistle.
• v. i. - To become hollow in the process of solodifying; -- said of an ingot, as of steel.
• v. t. - To perform, as a tune, by playing on a pipe, flute, fife, etc.; to utter in the shrill tone of a pipe.
• v. t. - To call or direct, as a crew, by the boatswain's whistle.
• v. t. - To furnish or equip with pipes; as, to pipe an engine, or a building.