American Heritage Dictionary
(6)
Century Dictionary
(5)
GNU Webster's 1913
(2)
WordNet
(3)
Elsewhere on the web
The American Indian community for 50 years has worked to banish images and names like Cleveland's chief wahoo, Washington redskins, Kansas City chiefs, Atlanta braves.— The Ukiah Daily Journal Forum
Mark's favorite technique for catching wahoo is high-speed trolling.
However, when a hard-fighting wahoo is racing north while the boat is high-speeding south, the rod and reel is akin to the flag in the middle of a rope being used for a tug-of-war.
Of course the real reason I love catching wahoo is that they make great tasting firm filets, that are delicious no matter how you prepare them.— KeysNews.com -
If toothy fish are in the area and of interest, such as wahoo, a wire leader and different bait is deployed.

American Heritage Dictionary (3)
Century Dictionary (1)
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You can expect to see this word about once a year.