Or (conjunction)

1. Used to connect words or phrases to indicate that one or the other is chosen.
2. Used to connect alternatives.
3. Used to indicate the possibility of one thing or another.
4. Used to indicate the possibility of choosing between two possibilities.

Origin:

Middle english: from old english ōra, of germanic origin; related to dutch of and german oder.

Examples:

1. I will have coffee or tea.
2. I will wear this shirt or that shirt.
3. I will go by car or by train.
4. I will take this road or that road.
5. I will watch this movie or that movie.