noun, noun or participle which takes 'suru', transitive verb
pressing clothes by sleeping on them
Refers to the practice of placing clothes under bedding while sleeping to smooth out wrinkles using body weight and warmth. Often used as a noun or with する.
スーツのズボンを寝押しして、しわを伸ばした。
I pressed my suit trousers by sleeping on them and got the wrinkles out.
アイロンがないときは、寝押しが便利
When you don't have an iron, sleeping on your clothes is handy.