共きょう同どう便べん所じょ

noun

public toilet; shared lavatory

Refers to a toilet facility shared by multiple people, such as in a dormitory, apartment building, or public space. Often used interchangeably with 公衆便所.

See also: 公衆便所 (こうしゅうべんじょ)

• このアパートは共きょう同どう便べん所じょなので、掃そう除じ当とう番ばんがある。

  This apartment has a shared toilet, so there is a cleaning duty roster.

noun

slut; promiscuous woman

Vulgar slang likening a woman to a public toilet. Strongly derogatory; avoid in polite conversation.

See also: 公衆便所

• あいつは共きょう同どう便べん所じょだって、陰かげで言いわれてるらしい。

  I hear she's being called a slut behind her back.