[1] : The Collaborative International Dictionary of English v.0.48

piano \pian"o\, pianoforte \pian"ofor`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.
   1913 webster

   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.
      1913 webster
see also:
plain fort dumb piano digitorium grand piano grand 
square piano upright piano 

[2] : WordNet (r) 2.0

pianoforte
     n : a stringed instrument that is played by depressing keys that
         cause hammers to strike tuned strings and produce sounds
         syn: piano, forte-piano
see also:
piano forte-piano 

[3] : Moby Thesaurus II by Grady Ward, 1.0

38 moby thesaurus words for "pianoforte":
   klavier, steinway, baby grand, cembalo, clarichord, clavicembalo,
   clavichord, clavicittern, clavicymbal, clavicytherium, clavier,
   concert grand, cottage piano, couched harp, dulcimer harpsichord,
   grand, grand piano, hammer dulcimer, harmonichord, harpsichord,
   manichord, manichordon, melodion, melopiano, monochord,
   pair of virginals, parlor grand, pianette, pianino, piano,
   piano-violin, sostinente pianoforte, spinet, square piano, upright,
   upright piano, violin piano, virginal

Pianoforte >> P Words
Pianoforte, definition of term: Pianoforte
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