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washboard

1 ENTRIES FOUND:
washboard /ˈwɑːʃˌboɚd/ noun
plural washboards
washboard
/ˈwɑːʃˌboɚd/
noun
plural washboards
Britannica Dictionary definition of WASHBOARD
[count]
: a board with ridges on its surface that was used in the past for washing clothes by rubbing wet clothes against it
◊ Washboards are also sometimes used as musical instruments in some types of folk and country music.
US, informal : a group of strong and well-shaped muscles that can be seen on a person's stomach usually used before another noun