| POS | the number of a letter box at the post office where mail is collected |
|---|---|
| POS | having the postage paid by the sender |
| POS | nystagmus caused by suddenly stopping the rapid rotation of the body |
| POS | a token that postal fees have been paid |
| POS | meter for bulk mailings that imprints correct prepaid postage on pieces of mail and records the total charge |
| POS | a token that postal fees have been paid |
| POS | of or relating to the system for delivering mail |
| POS | a card for sending messages by post without an envelope |
| POS | a clerk in a post office |
| POS | a code of letters and digits added to a postal address to aid in the sorting of mail |
| POS | a written order for the payment of a sum to a named individual |
| POS | the system whereby messages are transmitted via the post office |