0 a metal container in the street or other public place in which you can put letters for them to be collected and sent to someone else --
1 a metal container in the street or other public place in which you can put letters to be mailed --
2 → mailbox --
It is the easiest thing in the world to push a letter through a postbox and then tip off the police that somebody is a member of a proscribed organisation.
We are like postboxes in this affair.
The postbox is at the gate.
I would not wish to be a postbox in that matter.
I have difficulty in equating a postbox with a commission.
At one stage he referred to it as a postbox.
In one case, the front of a postbox was blown off by a firework that had been placed inside it.
In fact, my local authority is rather like a postbox at the moment.
