洗う, あらう
Conjugated: 洗って
Godan verb, Transitive
1. to wash, to cleanse, to rinse
2. to inquire into, to investigate
3. to purify (one's heart)
4. to lave (e.g. shore), to wash over (e.g. deck), to sweep
そのバッグを洗うときは洗濯機に入れないでください。
首を洗って待つ, くびをあらってまつ
Expression, Godan verb, Idiomatic expression, usu. in the imperative, as a threat
to wait for one's punishment, to wait before one gets what's coming to one, to wash one's neck and wait (i.e. for one's beheading)