A pipe that is a conduit for water; an essential element of plumbing. / A device for smoking, such as a hookah or bong, in which the smoke is drawn through a container of water before inhaling.

(nautical) A whistle, previously used by boatswain's mates to pipe orders throughout a ship; now used for the ceremonial piping onboard of visiting dignitaries.

(idiomatic) Very hot.

A conduit made of pipes used to convey water, gas or petroleum etc.

(computing, transitive) To design (a microchip etc.) so that processing takes place in efficient stages, the output of each stage being fed as input to the next.

(explosives) An improvised explosive device consisting of blasting powder or other explosive material encased in a metal pipe to increase the blast effect.

A surname originating as an occupation. / A female given name transferred from the surname, used since the mid-twentieth century, first by the American actress Piper Laurie.

An object (usually made of glass) used for smoking crack cocaine, usually in rock form.

A piece of flexible wire in which tufted fabric is twisted and which is used to clean out the stem of a tobacco pipe or other narrow tube. It can be also used for arts and crafts

(skateboarding, snowboarding, skiing, BMX, rollerskating, kickscootering, etc.) A structure used to perform tricks, approximately semicircular in cross-section, resembling the bottom half of a cylinder laying down.