The Collaborative International Dictionary of English v.0.48:

Woohoo \Woo`hoo"\, n. (Zool.)
   The sailfish.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Boohoo \Boo"hoo`\, n. (Zool.)
   The sailfish; -- called also woohoo.
   [1913 Webster]