Definition of pipeline
1a
: a line of pipe with pumps, valves, and control devices for conveying liquids, gases, or finely divided solids
b
: pipe sense 2b
2
: a direct channel for information
3
: a process or channel of supply
an arms pipeline
4
: a state of development, preparation, or production
several projects in the pipeline
also
: the system for such processes
a strong product pipeline
5
: a course of individual advancement or development especially to fill organizational needs
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Merriam-Webster unabridged
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Time Traveler for pipeline
The first known use of pipeline was in 1856
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