mailbox
metal or plastic box usually rectangular or cuboid a hinged lid with a slot or door a flag to denote when mail is inside a lock with a key or combination a name and address label painted either black, white, or a color
mailbox which has metal or plastic box mailbox which has usually rectangular or cuboid mailbox which is a hinged lid with a slot or door mailbox which is a flag to denote when mail is inside mailbox which is a lock with a key or combination mailbox which is a name and address label mailbox which has painted either black, white, or a color