film cutout

noun

: a thin insulating film that breaks down when a series filament street lamp fails and that short-circuits the lamp so as not to interrupt the service elsewhere

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