/ Dictionary / Index T time lamp: Meaning and Definition of Find definitions for: time' lamp" Pronunciation: [key] an oil lamp of the 17th and 18th centuries, burning at a fixed rate and having a reservoir graduated in units of time. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. time-lag time-lapse Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language