wash out is a verb meaning "prevent or interrupt due to rain". It carries 7 recorded senses.
wear or destroy by the force of water
“The hail storms had washed out the bridges”
drain off the color in the course of laundering
“The harsh soap washed out the delicate blouse”
lose color in the process of being washed
“The expensive shirt washed out in the German washing machine”
Definitions, synonyms and semantic relations for wash out come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.