/ Dictionary / Index S speed metal: Meaning and Definition of Find definitions for: speed' met"al Pronunciation: [key] a style of heavy-metal music typically played at extremely fast tempos. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speed limit speedo Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language