pipeline

American  

[pahyp-lahyn] / ˈpaɪpˌlaɪn /

noun

1. a long tubular conduit or series of pipes, often underground, with pumps and valves for flow control, used to transport crude oil, natural gas, water, etc., especially over great distances.

2. a route, channel, or process along which something passes or is provided at a steady rate; means, system, or flow of supply or supplies.

   Freighters and cargo planes are a pipeline for overseas goods.

3. a channel of information, especially one that is direct, privileged, or confidential; inside source; reliable contact.

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verb (used with object)

pipelined, pipelining

1. to convey by or as if by pipeline.

   to pipeline oil from the far north to ice-free ports; to pipeline graduates into the top jobs.

idioms

1. in the pipeline,

   1. Informal. in the process of being developed, provided, or completed; in the works; under way.

   2. Government Informal. (of funds) authorized but not spent.

pipeline British  

/ ˈpaɪpˌlaɪn /

noun

1. a long pipe, esp underground, used to transport oil, natural gas, etc, over long distances

2. a medium of communication, esp a private one

3. in the process of being completed, delivered, or produced

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verb

1. to convey by pipeline

2. to supply with a pipeline

Etymology

Origin of pipeline

First recorded in 1855–60; pipe ¹ + line ¹

Explanation

A pipeline is a series of pipes that liquid or gas flows through. A pipeline can also be a channel for other things, even ideas. The Internet is an information pipeline. No digging required! While oil and natural gas often go through a pipeline, other substances are also transported this way, including water used for irrigation and even, in some cases, beer. You can use pipeline when you talk about other quick-moving things, like a source of goods, or even spoken communication. You could call the big companies in your city a kind of “job pipeline.” If you have an idea for a community pool in the pipeline, go ahead and hire the lifeguards!

Example Sentences

The Northeast Supply Enhancement Pipeline broke ground in April 2026 after a decade of permit fights.

From MarketWatch • Apr. 30, 2026

Asked by AFP, the EU delegation in Turkmenistan said: "We leave a decision on a potential Trans-Caspian Pipeline to Turkmenistan, Azerbaijan, and/or other parties interested in investing in it financially."

From Barron's • Apr. 21, 2026

In other words, it gave itself the authority to assume oversight, specifically through the Pipeline and Hazardous Materials Safety Administration, a unit of the Department of Transportation.

From Los Angeles Times • Apr. 21, 2026

It could also be possible to expand the UAE’s pipeline to Fujairah and the Saudis’ East-West Pipeline, including improving the port of Yanbu so bigger ships can berth there.

From MarketWatch • Apr. 15, 2026

The DEA launched Operation Pipeline in 1984 as part of the Reagan administration’s rollout of the War on Drugs.

From "The New Jim Crow" by Michelle Alexander

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