noun. A whole note in music.

noun. In music, a whole note, or the space of time measured by it. See note, 13.

noun. A note of half the time or duration of the breve; -- now usually called a whole note. It is the longest note in general use.

noun. A musical note four beats long in 4/4 time; a whole note (US)

noun. a musical note having the longest time value (equal to four beats in common time)

"Consecutives on successive semibreve beats are broken by the intervention of a minim if it is a harmony note, but not if it is a passing discord."

breve  crotchet  minim  quaver  semibreve rest  

musical note  note  tone