n. A European wading bird, of the family Ardeidæ and subfamily Botaurinæ; the Botaurus stellaris, a kind of heron.n. Any heron of the subfamily Botaurinæ.n. In salt-works, the brine remaining after the salt is concreted.n. A very bitter compound of quassia, cocculus indicus, licorice, tobacco, etc., used for adulterating beer. Also called bittering.