/ Dictionary / Index R roll-off: Meaning and Definition of Find definitions for: roll-off Pronunciation: (rōl'ôf", -of"), [key] — n. the rate of loss or attenuation of a signal beyond a certain frequency. the tendency of an airplane to lower one wing under varying conditions of flight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: roll-off (Thesaurus) rollock roll-on Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language