af-frĕmo

ĕre, 3, v. n.
I. to roar, rage, growl, or murmur at (only in post-Aug. poets): adfremit his (Mars), Val. Fl. 1, 528: Boreas stridentibus adfremit alis, Sil. 14, 124.
Lewis & Short
A Latin Dictionary, 1879
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