[ wosh-doun, wawsh- ]
/ ˈwɒʃˌdaʊn, ˈwɔʃ- /
the act or process of washing down, as in cleaning something completely.
Origin of washdown
First recorded in 1945–50; noun use of verb phrase wash down
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for washdown
The washout and washdown water-closets are an improvement upon the hopper closets.