The sign for "washing machine" shows the agitating action of a washing machine. It can
mean "do laundry." I've also seen people sign "DISH WASHING-MACHINE"
to mean "dishwasher."
WASHING-MACHINE (wash-in-machine) laundry
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Sample sentence: Do you like doing laundry? / Do you like washing clothes?
(CLOTHES, YOU LIKE WASH-in-machine?)