brown duck

noun

1

: black duck sense d

2

: a rather rare New Zealand duck (Anas chlorotis or Elasmonetta chlorotis) grayish brown above with rufous markings and breast

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