/ Dictionary / Index S speed limit: Meaning and Definition of Find definitions for: speed' lim"it Pronunciation: [key] the maximum speed at which a vehicle is legally permitted to travel, as within a specific area, on a certain road, or under given conditions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. speed light speed metal Related Content Daily Word Quiz: reluctant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language