Meditation is not just a Buddhist thing, but this article describes how meditation does fit into Buddhism.
In order to follow the Path to Liberation and Enlightenment, three practices are required:
1. Acquire Buddhist teachings through reading or listening.
2. Reflect on the teachings, mulling them over as you go about your day.
3. Formal meditation, seated on the cushion.
It is not enough to simply hear the teachings, but it is necessary to have a heartfelt appreciation for the underlying sentiment.
One might argue that a fourth practice should also be included:
4. Practice the path, through your actions of body, speech, and mind.
Buddhism is something that you do, and your life should be consistent with the teachings.