资料来源 : Webster's Revised Unabridged Dictionary (1913)

Perca \Per"ca\, n. [L., a perch.] (Zo["o]l.)
   A genus of fishes, including the fresh-water perch.

资料来源 : WordNet®

Perca
     n : type genus of the Percidae [syn: {genus Perca}]