semibreve.

(a loanword from Spanish)

Headword: 
semibreve.
Principal English Translation: 

semibreve (a musical term, this is a loanword from Latin and Spanish)

Attestations from sources in Spanish: 

Aun yn semibreue vme gonpas mopoa can noyuhqui y pavsa = Y la breve, dos pulsos para que se le cuente igual que a la pausa (seventeenth-century Guatemala)
Fernando Horcasitas y Alfred Lemmon, "El Tratado de Santa Eulalia: un manuscrito musical náhuatl," Tlalocan 12 (1997), 110–111.