/ Dictionary / Index S sweep-second: Meaning and Definition of Find definitions for: sweep-sec•ond Pronunciation: (swēp'sek"und), [key] — n. (on a timepiece) a second hand that is a sweep hand. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sweep-second (Thesaurus) sweeps sweepstake Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language