Dictionary.com
Thesaurus.com

draft tube

American  

noun

  1. the flared passage leading vertically from a water turbine to its tailrace.


Etymology

Origin of draft tube

First recorded in 1840–50

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.

Fish then enter a draft tube or swim under a gate, where there is a rapid decompression and water surge.

From Forbes

This home appliance doubles as a piece of furniture, with holes for a draft tube, start button and air vent.

From Time Magazine Archive