A long pipe system carrying liquids or gases over distance.

• Often underground or submarine for oil, gas, or water.

A sequence of processing stages with outputs feeding the next.

• Used in computing, manufacturing, and data flows.

The set or flow of future items, projects, or candidates.

• Work or releases that are being prepared or expected.

The hollow inside of a breaking wave forming a tube.

• Area a surfer rides when the wave curls over.

To convey something by a system of pipes.

• To lay or install pipes through an area.

To design or arrange processing in pipelined stages.

• To route data or jobs through a pipeline.