Definition of madtom
: any of several small freshwater catfishes (family Ameiuridae) that are widely distributed in the central and eastern U.S. and have poisonous pectoral spines capable of inflicting painful wounds
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of madtom
1mad + tom (cat)
Seen and Heard
What made you want to look up madtom? Please tell us where you read or heard it (including the quote, if possible).