1. Any of numerous tailless amphibians chiefly of the family Bufonidae, related to and resembling the frogs but characteristically more terrestrial and having a broader body and rougher, drier skin.
2. The horned lizard.
3. A person regarded as repulsive.

[Middle English tadde, tode, from Old English tādige.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.