the GNU version of the Collaborative International Dictionary of English
n. An onomatopoetic name for a dog or its bark.
The Century Dictionary and Cyclopedia
n. The loud bark of a dog, or an imitation of it.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the bark of a dog
n. informal terms for dogs
Word Usage
"If bird names are anything to go by, the "bowwow" theory (perhaps we should call it the "tweet-tweet" theory) rules the roost, since many birds are named for their songs or calls."