greater shearwater

noun

: a rather large chiefly sooty brown and white shearwater (Puffinus gravis or Procellaria gravis) of the eastern coast of North and South America

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