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.

( often initial capital letter ) the department of a government charged with the transportation of mail.

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.

noun

general post office , gpo , mail , po , postal service , postal system , postmaster