Piano; Pianoforte

Part of speech: noun (n.)

A well-known musical instrument somewhat resembling the harpsichord, and consisting of a sreies of wires of graduated length, thickness, and tension, struck by hammers moved by keys. Dumb piano. See Digitorium. -- Grand piano. See under Grand. -- Square piano, one with a horizontal frame and an oblong case. -- Upright piano, one with an upright frame and vertical wires.