Breadcrumb Home > Dictionary > Index R roller bearing: Meaning and Definition of Find definitions for: roll'er bear"ing Pronunciation: [key] — Mach. Mach. a bearing consisting of cylindrical or tapered rollers running between races in two concentric rings, one of which is mounted on a rotating or oscillating part, as a shaft. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. roller Rollerblade TrendingHere are the facts and trivia that people are buzzing about. The Book of Philippians: Summary Current Events This Week: May 2023 Preamble of the United Nations Charter Queen Victoria Books of the Bible: New Testament Books in Order The 88 Recognized Constellations ✖ Related Content Daily Word Quiz: foison Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language