/ Thesaurus / R Synonyms of riser pipeline Find synonyms for: Noun1. riser, riser pipe, riser pipeline, riser main, pipe, pipage, pipingusage: a vertical pipe in a buildingWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language