whistling moth

noun

: an Australian moth (Hecatesia fenestrata) of the family Agaristidae that in the male has a ribbed membranous area on the forewing which produces whistling noise in flight

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