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spillway

spillway

8 5.4
A channel that carries extra water over a dam to prevent flooding
  • noun
  • /ˈspɪlˌweɪ/
  • Specialized
translation icon : desagüe
  • The topography drops 80 feet from start to finish, creating an aesthetically pleasing series of ponds and spillways.
  • spillway at the dam

Examples

  • Water pours from the tunnel into the spillway of Barkley Dam.

    Fiction book (1993)
  • The family homestead is in the path of the spillway of a dam constructed on the reserve.

    Academic text (2002)
  • - Right where you said it would, down low next to the spillway.

  • Get them down here and drag the bottom of this spillway.

  • He's gonna open up the spillway and release a whole lot of water.

  • - It's about 10 feet from the bottom, on the right-hand side of the spillway.

  • - The spillway gates won't open.

  • I waded into the water and started my swim to the spillway.

    Fiction book (1992)
  • The engineers built a new spillway to manage the excess water from the reservoir.

  • During heavy rain, the spillway allows water to flow away from the dam to prevent flooding.

Synonyms

channel
vsspillway
57 3.8

A deep narrow waterway that ships can use

refers specifically to dam overflow paths used to prevent flooding rather than any waterway
spill
vsspillway
  • Specialized
2 6.9

A channel that lets extra water flow from a dam to prevent flooding

is the standard compound term rather than the shorter variant
floodway
vsspillway
1 4.1

A channel or area that directs extra floodwater away from homes and buildings

is specific to dam overflow channels rather than broad flood routing
sluiceway
vsspillway
  • Specialized
1 9.1

A channel that carries fast water and is controlled by a gate

lacks the specific gate control emphasis and focuses on overflow routing
wasteweir
vsspillway
  • Specialized
9.9

A channel that carries extra water over or around a dam to stop flooding

focuses mainly on preventing flooding rather than structural protection

How Big

floodway
1 4.1
spillway
  • Specialized
8 5.4
weir
15 8.2
sluice
7 7.0

Surface Forms

spillway singular
spillways plural

Morphology

spillway = spill + way (transparent) = spill + way

The compound denotes a channel ('way') for water that 'spills'; learners who know 'spill' and 'way' can readily infer the meaning.

Etymology

Spillway comes from the simple words spill ('to flow out') and way ('path'). So it is a 'path' for extra water to 'spill' safely from a dam, helping to stop flooding.