(of a dirty mark) to be removed from clothes by washing These ink stains won't wash out.
- 1 to wash the inside of something to remove dirt, etc. to wash out empty bottles
- 2to remove a substance from something by washing Wash the dye out with shampoo.
- 3(of rain) to make a game, an event, etc. end early or prevent it from starting The game was completely washed out. related noun washout