n.

1. 冲刷
2. 冲失地区；冲坏的缺口；侵蚀部分
3. 【俚】大败；失望
   The rock concert was a washout.

   那场摇滚音乐会真叫人失望。

   The graduation party was a washout because of the big storm.

   因为暴风雪的来袭，毕业舞会被取消了。

4. 失败者

n.

1. informal a disappointing failure.
2. a breach in a road or railway track caused by flooding.
3. Geology  a channel cut into a sedimentary deposit by rushing water and filled with younger material.
4. Medicine  the removal of material from the body by washing with a fluid or by allowing it to be eliminated over a period.