1. A long piece of wood or other material set upright into the ground to serve as a marker or support.

2. A similar vertical support or structure, as: a. A support for a beam in the framework of a building. b. A terminal of a battery.

3. Sports. A goal post.

4. The starting point at a racetrack.

5. An earring attached by a short bar or stud that passes through the ear and fits into a cap in the back.

1. a. To display (an announcement) in a place of public view. b. To cover (a wall, for example) with posters.

2. To announce by or as if by posters: post banns.

3. To put up signs on (property) warning against trespassing.

4. To denounce publicly: post a man as a thief.

5. To publish (a name) on a list.

6. Games. To gain (points or a point) in a game or contest; score.