| 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 initial capital letter ) 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. |

| post office n. Abbr. PO
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