Source : Webster's Revised Unabridged Dictionary (1913)

Brit \Brit\, Britt \Britt\, n. (Zo["o]l.)
      (a) The young of the common herring; also, a small species
          of herring; the sprat.
      (b) The minute marine animals (chiefly Entomostraca) upon
          which the right whales feed.

Source : WordNet®

Brit
     n 1: a native or inhabitant of Great Britain [syn: {Britisher}, {Briton}]
     2: the young of a herring or sprat or similar fish [syn: {britt}]
     3: minute crustaceans forming food for right whales [syn: {britt}]