n.
Pronunciation: p ē - ' a-( ˌ )n ō also - ' ä-
Function: noun
Inflected Form: 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