/ Dictionary / Index P piano wire: Meaning and Definition of Find definitions for: pian'o wire" Pronunciation: [key] a very thin steel wire of high tensile strength. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. piano tuner Piarist Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language