n.
(练习指法用的)无声钢琴

Piano \Pi*an"o\, Pianoforte \Pi*an"o*for`te\, n. [It. piano soft
(fr. L. planus even, smooth; see {Plain}, a.) + It. forte
strong, fr. L. fortis (see {Fort}).] (Mus.)
A well-known musical instrument somewhat resembling the
harpsichord, and consisting of a series 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.

Digitorium \Dig`i*to"ri*um\, n. [NL., fr. L. digitus a finger.]
A small dumb keyboard used by pianists for exercising the
fingers; -- called also {dumb piano}.