/ Dictionary / Index Z z's: Meaning and Definition of Find definitions for: z's Pronunciation: (zēz), [key] — n. (used with a pl. v.) Slang. sleep (often used with grab, catch, etc.): to grab some z's before dinner. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Zr Zsigmondy Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language