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
Sample sentence: Do you like doing laundry? / Do you like washing clothes?
(CLOTHES, YOU LIKE WASH-in-machine?)