Birt , n. [OE. byrte; cf. F. bertonneau. Cf. Bret, Burt.] (Zool.) A fish of the turbot kind; the brill. [Written also burt, bret, or brut.] [Prov. Eng.]1913 Webster
Burt , n. (Zool.) See Birt. [Prov. Eng.]1913 Webster