معنی کلمه :‌ bittern

Realm. [Obs.] Chaucer.

A wading bird of the genus Botaurus, allied to the herons, of various species.

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

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