/ Thesaurus / K Synonyms of knob celery Find synonyms for: Noun1. celeriac, celery root, knob celery, root celery, turnip-rooted celery, Apium graveolens rapaceum, herb, herbaceous plantusage: grown for its thickened edible aromatic rootWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language