Definitions for wash off
wash, wash out, wash off, wash away(verb)
remove by the application of water or other liquid and soap or some other cleaning agent
"he washed the dirt from his coat"; "The nurse washed away the blood"; "Can you wash away the spots on the windows?"; "he managed to wash out the stains"
Kernerman English Learner's Dictionary
wash off(verb)ɒʃ, wɔʃ
to clean from the surface
Wash the mud off your shoes.; Wash your hands off.
To remove (or be removed) by washing