/ Dictionary / Index B bed rest: Meaning and Definition of Find definitions for: bed' rest" Pronunciation: [key] a prolonged rest in bed, as in the treatment of an illness. a device used to support a person sitting up in bed. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bedrest (Thesaurus) bedrail bedrid Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language