The Collaborative International Dictionary of English v.0.48:
Brumal \Bru"mal\, a. [L. brumalis, fr. bruma winter: cf. F. brumal.] Of or pertaining to winter. "The brumal solstice." --Sir T. Browne. [1913 Webster]WordNet (r) 3.0 (2006):
brumal adj 1: characteristic of or relating to winter; "bears in brumal sleep" [syn: brumal, hibernal, hiemal]