› UK (US mail) to send a letter or parcel by post: Did you post my letter?
› to leave a message on a website: I posted a query about arthritis treatment.
be posted to France/London/Singapore, etc › to be sent to France/London/Singapore, etc to work, usually for the government or army
post a notice/sign, etc › to put a notice/sign, etc somewhere: He posted the message on the noticeboard.
keep sb posted › to make certain that someone always knows what is happening: Keep me posted on anything that happens while I'm away.