noun
- a large salamander, Cryptobranchus alleganiensis, of rivers and streams in eastern North America, having a flat, stout body and broad head.
- Informal. a reckless or headstrong person.
noun
- a very large dark grey aquatic salamander, Cryptobranchus alleganiensis, with internal gills: inhabits rivers in E and central US: family Cryptobranchidae
large salamander of the Ohio and Mississippi rivers, 1812, supposedly so called for its ugliness.