Added 9 October 2026 pipeline /ˈpaɪpˌlaɪn/ noun Categories: LanguageThingsUncommon Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about pipeline at Wordnik → Where our words come from → Gossip spread by spoken communication. the news of their affair was spread by word of mouth A pipe used to transport liquids or gases. a pipeline runs from the wells to the seaport Origin From pipe + line. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: grapevinelinepipeworkplumbingconduitwaterworksdrainflueaqueductdrainageduct Back to today's word