The meaning of Bittern and additional information.

Bittern(a.) The brine which remains in salt works after the salt is concreted, having a bitter taste from the chloride of magnesium which it contains.

Bittern(a.) A very bitter compound of quassia, cocculus Indicus, etc., used by fraudulent brewers in adulterating beer.

Bittern(n.) A wading bird of the genus Botaurus, allied to the herons, of various species.