Source : Webster's Revised Unabridged Dictionary (1913)

Birk \Birk\, n. [See {Birch}, n.]
   A birch tree. [Prov. Eng.] ``The silver birk.'' --Tennyson.

Birk \Birk\, n. (Zo["o]l.)
   A small European minnow ({Leuciscus phoxinus}).