jawfish

noun

: a fish of the percoid family Opisthognathidae comprising tropical marine fishes with a single dorsal fin, a single lateral line, and very large mouth

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now