The Collaborative International Dictionary
Bemol
Bemol \Be"mol\ (b[=e]"m[o^]l), n. [F. b['e]mol, fr. b['e] [flat] + mol soft.] (Mus.) The sign [flat]; the same as B flat. [Obs.]
Wiktionary
bemol
n. (context music English) The flat symbol (♭)