yahoo

n. 1. One of a race of filthy brutes resembling men but subject to the Houyhnhnms in Swift's “Gulliver's Travels.” See in the Dictionary of Noted Names in Fiction. [ Webster 1913 Suppl. + WordNet 1.5 + CM ]

2. Hence, any brutish or vicious character. [ Webster 1913 Suppl. ]

3. A raw countryman; a lout; a greenhorn. [ U. S. ] [ Webster 1913 Suppl. ]

4. Someone who is not very intelligent or not interested in culture.
Syn. -- yokel, rube, hick, hayseed, bumpkin, chawbacon. [ WordNet 1.5 ]