pipe
n. countablen. a long tube that carries water, gas, or other liquids from one place to another. You can find pipes under your sink or running through the walls of a building.
n. a hollow cylinder or tube, typically made of metal or plastic, used to convey a fluid or gas.
A plumber fixes the broken water pipe.
The main water pipe burst, flooding the street and cutting off the supply to several homes.
Engineers had to lay miles of reinforced pipe across the desert to transport oil from the remote wellhead to the coastal refinery.
From Middle English pīpe, pype (“hollow cylinder or tube used as a conduit or container; duct or vessel of the body; musical instrument; financial records maintained by the English Exchequer, pipe roll”), from Old English pīpe (“pipe (musical instrument); the channel of a small stream”), from Proto-West Germanic pīpā. Reinforced by Vulgar Latin pīpa, from Latin pipire, pipiare, pipare, from pīpiō (“to chirp, peep”), of imitative origin. Doublet of fife. The “storage container” and “liquid measure” senses are derived from Middle English pīpe (“large storage receptacle, particularly for wine; cask, vat; measure of volume”), from pīpe (above) and Old French pipe (“liquid measure”). In specific contexts, calques similar units of measure such as Portuguese pipa. The verb is from Middle English pīpen, pypyn (“to play a pipe; to make a shrill sound; to speak with a high-pitched tone”), from Old English pīpian (“to pipe”).