water-tube boiler

[waw-ter-toob, -tyoob, wot-er-]

noun

a boiler for generating steam by passing water in tubes (water tubes) through flames and hot gases.

Compare fire-tube boiler.

Origin of water-tube boiler

First recorded in 1870–75

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018