Dictionary.com
Thesaurus.com
Showing results for spillway. Search instead for spill way.
Synonyms

spillway

American  
[spil-wey] / ˈspɪlˌweɪ /

noun

  1. a passageway through which surplus water escapes from a reservoir, lake, or the like.


spillway British  
/ ˈspɪlˌweɪ /

noun

  1. Also called: wasteweir.   spill.  a channel that carries away surplus water, as from a dam

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of spillway

First recorded in 1885–90; spill 1 + way 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

To handle the extra volume, engineers send surplus water down 5 Shaft into the deep pool below, much like an overflow spillway helps relieve pressure at a full reservoir.

From Science Daily Jul. 6, 2026

Because the dam was constructed in a canyon too narrow to support a typical spillway, officials erected the unique engineering feature to still allow for drainage — the Morning Glory Hole.

From Los Angeles Times Feb. 10, 2025

But when the river is high, opening the spillway eases pressure on the levees that protect New Orleans.

From Seattle Times Jan. 24, 2024

The first thing I saw after claiming a parking spot was a vivid rainbow, hanging in the mist above the dam’s spillway.

From Los Angeles Times Jul. 21, 2023

On this side of the lake there was a concrete wall with a spillway.

From "Bless Me, Ultima" by Rudolfo Anaya

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember new words for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com