wash out verb8 •To remove something by washing.He washed out the stain. •To be removed by washing.That stain washed out easily. •To cancel due to bad weather.The continuous rain washed out the cricket match. •To wash the inside of something.We must wash out the bins; they are full of maggots. •To remove or obscure (something) by saturation (of light, noise, etc.)The sun washes out the stars of the night sky. •To wear away by the flow of water; to erode.The sandcastle was washed out by the tide. •To fail utterly at something one has attempted. •To lose traction while going around a turn, especially in cycling, motorsports and skiing/snowboarding.The rider washed out around that last turn and hit a tree. formswashed out · washing out · washes out