the south and the north; the distance or direction from north to south

(dialect) Used in wordplay or jokes to mean "not a thing" (based on the word for "thing" being 东西 dōng​xi, literally "east-west"); used as a humorous way to scold someone for being good-for-nothing

(literary) reason; sense; logic (referring to whether something makes sense)

(archaic) a man (parallel to the use of 东西 dōng​xi for things)