Bit·tern n. Zool. A wading bird of the genus Botaurus, allied to the herons, of various species.
Note: ☞ The common European bittern is Botaurus stellaris. It makes, during the brooding season, a noise called by Dryden bumping, and by Goldsmith booming. The American bittern is Botaurus lentiginosus, and is also called stake-driver and meadow hen. See Stake-driver.
Note: The name is applied to other related birds, as the least bittern (Ardetta exilis), and the sun bittern.
least bittern
n : small American bittern [syn: Ixobrychus exilis]