Main
Main noun - A principal pipe in a system that distributes water or gas or electricity or that collects sewage.
Piping
Piping noun - A long tube made of metal or plastic that is used to carry water or oil or gas etc..
Both words in one sentence
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Though introduced by the very end of the story, the 2nd ending of the Fafner in the Azure: Dead Aggressor: Exodus shows Kazuki, Soushi and the rest of the main pilots wearing the imposing navy-blue greatcoats with red piping, which boosts their Badass levels through the roof.
Source: Badass Longcoat
Cite this Source
Piping and Main. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/main/piping
Main & Piping. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/main/piping>.
Piping or Main. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/main/piping.
Google Ngram Viewer shows how "main" and "piping" have occurred on timeline