a crying out, a bellowing, a roaring;
a loud, bellowing noise; an uproar ...1646 rare
from Latin boation-, boatio (roaring, bellowing), from Latin boāt- , past participial stem of boāre (to bellow) + -iō (-ion)
FIRST DOCUMENTED USE
1646 - see EXAMPLE below
"...Whether the large perforations of the extremities of the weazand, in the abdomen, admitting large quantity of air within the cavity of its membranes, as it doth in frogs, may not much assist this mugiency or boation, may also be considered. For such as have beheld them making this noise out of the water, observe a large distention in their bodies; and their ordinary note is but like that of a raven..."
From: Pseudodoxia Epidemica
- Thomas Browne