/ Dictionary / Index S switch-off: Meaning and Definition of Find definitions for: switch-off Pronunciation: (swich'ôf", -of"), [key] — n. the act or process of switching off a power supply, light source, appliance, etc. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: switch-off (Thesaurus) switchman switch-on Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language