The word occurs in (Isaiah 14:23; 34:11; Zephaniah 2:14) and we are inclined to believe that the Authorized Version is correct. The bittern (Botaurus stellaris) belongs to the Ardeidae, the heron family of birds, and is famous for the peculiar nocturnal booming sound which it emits.
Main reference: Smith's Bible Dictionary (1860s)
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