I. pi·a·no pē-ˈä-(ˌ)nō adverb or adjective
Etymology: Italian, from Late Latin planus smooth, from Latin, level — more at floor
Date: 1683
: at a soft volume : soft — used as a direction in music
II. pi·ano pē-ˈa-(ˌ)nō also -ˈä- noun
( plural pianos )
Etymology: Italian, short for pianoforte, from gravicembalo col piano e forte, literally, harpsichord with soft and loud; from the fact that its tones could be varied in loudness
Date: 1803
: a musical instrument having steel wire strings that sound when struck by felt-covered hammers operated from a keyboard