frĕmĕbundus — Lewis & Short
frĕmĕbundus, a, um, adj.fremo,
I making a low roaring, growling, snorting, muttering, murmuring (poet.): tanta moles (Argo), Att. ap. Cic. N. D. 2, 35, 89:
illapsu (elephantorum),Sil. 3, 463:
tum vero praeceps (Achilles) curru fremebundus ab alto Desilit,Ov. M. 12, 128.