1.
If you wash out a container, you wash the inside of it.
It was my job to wash out the fish tank.
= clean out
PHRASAL VERB : V P n (not pron)
2.
If dye or dirt washes out , it can be removed by washing.
With permanent tints, the result won’t wash out.
PHRASAL VERB : V P
3.
If rain washes out a sports game or other event, it spoils it or prevents it from continuing.
Rain washed out five of the last seven games.
PHRASAL VERB : V P n (not pron)
4.
see also washed-out , washout