Breadcrumb Home > Thesaurus > R Synonyms of rachis Find synonyms for: Noun 1. rachis, axis usage: axis of a compound leaf or compound inflorescence 2. spinal column, vertebral column, spine, backbone, back, rachis, skeletal structure usage: the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of rachis (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: inmediasres Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language