semibreve Meaning, Definition & Usage

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

WordNet

Sem"i*breve` noun
Etymology
Pref. semi- + breve: cf. F. semi-breve, It. semibreve.
Definitions
  1. (Mus.) 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.

Webster 1913