/ Dictionary / Index B buttonless: Meaning and Definition of Find definitions for: but•ton•less Pronunciation: (but'n-lis), [key] — adj. having no button or buttons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. buttonhook button man Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language