厠

Han character

 * 1) mingle with
 * 2) toilet, lavatory

Etymology
Generally thought to be a compound of 川|kawa and 屋|ya. Literally "river house", specifically a small building erected either near or over a stream used as a toilet.

The kanji 厠 is ateji. Other ateji include 圊 and 溷.

Noun

 * 1) a place used for excreting human waste; toilet