(Βριμώ), the angry or the terrifying, occurs as a surname of several divinities, such as Hecate or Persephone (Apollon. 3.861, 1211; Tzetz. ad Lycoph. 1171), Demeter (Arnob. v. p. 170), and Cybele. (Theodoret. Ther. 1.699.) The Scholiast on Apollonius (l.c.) gives a second derivation of Brimo from Βρόμος, so that it would refer to the crackling of the fire, as Hecate was conceived bearing a torch.
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890