— post-office , adj.
1. an office or station of a government postal system at which mail is received and sorted, from which it is dispatched and distributed, and at which stamps are sold or other services rendered.
2. ( often cap. ) the department of a government charged with the transportation of mail.
3. a game in which one player is designated "postmaster" or "postmistress" and calls another player of the opposite sex into an adjoining room, ostensibly to receive a letter but actually to receive a kiss.
[ 1625-35 ]