to send a letter, package etc by post [= mail]:
She's just gone to post a letter.
post something (off) to somebody
Did you remember to post the card to my parents?
post somebody something
I posted Barry the cheque last Friday.
2 British English
to push something through someone's letterbox:
I'll post the key through your letterbox when I leave.
if you are posted somewhere, your employer sends you to work there, usually for several years
post somebody to France/London etc
He joined the British Army and was posted to Germany.
to put up a public notice about something on a wall or notice board:
public noticealso post up
The exam results were posted on the bulletin board yesterday.
to make someone be in a particular place in order to guard a building, check who enters or leaves a place, watch something etc [= station]:
Guards were to be posted around nuclear power stations.
to regularly tell someone the most recent news about something
keep somebody posted on
I'll keep you posted on his progress.
to officially record and announce information about a company's financial situation or a country's economic situation:
profit/loss etcespecially American English
Cisco Systems posted record profits and sales for the third fiscal quarter.
to put a message or computer document on the Internet so that other people can see it:
Could you post those new flyers on David's website?
9 British EnglishPM
if a soldier is posted missing, it is announced officially that they have disappeared
10 law especially American English
to pay a specific amount of money in order to be allowed to leave prison before your trial