/ Dictionary / Index F float switch: Meaning and Definition of Find definitions for: float' switch" Pronunciation: [key] an electric switch controlled by a conductor floating in a liquid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. floatstone float valve Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language