Birt \Birt\ (b[~e]rt), n. [OE. byrte; cf. F. bertonneau. Cf. Bret, Burt.] (Zo["o]l.) A fish of the turbot kind; the brill. [Written also burt, bret, or brut.] [Prov. Eng.]
Source: Webster's Revised Unabridged Dictionary (1913)
Burt \Burt\, n. (Zo["o]l.) See Birt. [Prov. Eng.]