There are 2 main definitions of piano in English:

piano1

Syllabification: pi·an·o
Pronunciation: /pēˈanō
 
/

noun (plural pianos)

A large keyboard musical instrument with a wooden case enclosing a soundboard and metal strings, which are struck by hammers when the keys are depressed. The strings' vibration is stopped by dampers when the keys are released, and it can be regulated for length and volume by two or three pedals.
More example sentences
  • I like to use pianos and strings and brass as I feel that they are the most precious instruments to use.
  • They are regular pianos with real strings and keys but they are driven by digital pitch information from a computer.
  • Stanley had a great love of music and played a baby grand piano.

Origin

early 19th century: from Italian, abbreviation of pianoforte.

Definition of piano in:

There are 2 main definitions of piano in English:

piano2

Syllabification: pi·a·no
Pronunciation: /pēˈänō
 
, pēˈanō
 
/
Music

adverb& adjective

(Especially as a direction) soft or softly.
More example sentences
  • Play the piece without regard to dynamic changes; that is, play it piano.
  • Dynamics tend to be confined between forte and piano.
  • The sound climbs to a level it maintains until the final moment when subito, or sudden piano, returns.

noun

(plural pianos or piani /-nē/) Back to top  
A passage marked to be performed softly.
More example sentences
  • There is a crescendo, a sudden piano, a diminuendo and quiet ending in D.
  • Notice the sudden piano after the crescendo.
  • Her sudden piano followed by an immediate crescendo (surely a party piece!) was one of several delights delivered with real personality.

Origin

Italian, literally 'soft'.

Definition of piano in: