Definitions:
a tube used to convey water, gas, oil, or other fluid substances.

a device for smoking tobacco, consisting of a narrow tube made from wood, clay, etc. with a bowl at one end in which the tobacco is burned, the smoke from which is drawn into the mouth

a wind instrument consisting of a single tube with holes along its length that are covered by the fingers to produce different notes

a command which causes the output from one routine to be the input for another.

a cask for wine, especially as a measure equal to two hogsheads, usually equivalent to 105 gallons (about 477 litres)

convey (water, gas, oil, or other fluid substances) through a pipe or pipes

play (a tune) on a pipe or pipes

(of a bird) sing in a high or shrill voice

decorate (clothing or soft furnishings) with thin cord covered in fabric and inserted into a seam.

arrange (food, particularly icing or cream) in decorative lines or patterns

propagate (a pink or similar plant) by taking a cutting at the joint of a stem.