Definition of boation in English:

boation

noun

archaic, rare
  • Bellowing, roaring; a loud bellowing noise.

Origin

Mid 17th century; earliest use found in Thomas Browne (1605–1682), physician and author. From post-classical Latin boation-, boatio from classical Latin boāt-, past participial stem of boāre to bellow (from ancient Greek βοᾶν to shout, roar, of uncertain origin) + -iō.

Pronunciation

boation

/bəʊˈeɪʃn/