piano

Adjective

• used chiefly as a direction or description in music
  • the piano passages in the composition
    

Adverb

• used as a direction in music; to be played relatively softly

Noun

• (music) low loudness

• a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds

Related words

• Synonyms: 
  soft , softly , pianissimo , pianoforte , forte-piano
• Antonyms: 
  forte , loud , loudly