/ Dictionary / Index T time killer: Meaning and Definition of Find definitions for: time' kill"er Pronunciation: [key] a person with free time to spend. an activity that helps the time to go by agreeably or tolerably; pastime. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. timekeeper time-lag Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language