undersluice

noun

: a sluice covered from view or lying beneath another structure

specifically : a wasteway for sluicing out canals in which the waste escapes beneath other structures

Word History

Etymology

under entry 3 + sluice

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