From Wiktionary, the free dictionary
From Old Irish bonnán, a diminutive in -án of Proto-Celtic *bunnos, whence also Welsh bwn.
bonnán m (genitive singular bonnáin, nominative plural bonnáin)
- bittern (bird of the family Ardeidae)
- horn, trumpet; siren
- booming sound
bonnán m (genitive singular bonnáin, nominative plural bonnáin)
- Alternative form of buinneán (“slender shoot, sprout; sapling”)
Note: Certain mutated forms of some words can never occur in standard Modern Irish.
All possible mutated forms are displayed for convenience.