john
n. countablen. a toilet. You use this word in very casual situations, often when you are in someone's home or a public building.
n. a toilet or bathroom facility. Informal in register; frequently used in North American English.
I need to use the john before we leave.
He spent the entire morning cleaning the john after the party guests finally went home.
While the rest of the house was meticulously decorated with antique furniture, the john remained a purely functional space with plain white tiles and basic fixtures.
From Middle English John, Johan, Johannes, from Anglo-Norman Jehan, Johan, and also Old English Iohannes, both from Late Latin Iōhannēs, variant of Latin Iōannēs, from Koine Greek Ἰωάννης (Iōánnēs), from Biblical Hebrew יוֹחָנָן (Yôḥānān), perhaps contracted from a former יְהוֹחָנָן (Yəhōḥānān, “God is gracious”). Doublet of Jack, Jon, Johan, Johann, Johannes, Jean, Sean, Shane, Shaun, Ian, Ivan, Evan, Juan, Giovanni, and Yahya.
Usually preceded by the definite article 'the'.