gillaroo

noun

gil·​la·​roo

¦gilə¦rü

plural -s

: an Irish trout (Salmo stomachicus) in which the distal part of the stomach has thickened walls resembling a gizzard and serving to crush the shells of freshwater mollusks

Word History

Etymology

Irish Gaelic giolla ruadh, from giolla boy + ruadh red

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