This simply means "giving" or charity or helping others. This can be practiced in many different ways. You can do so through speech by using kind and encouraging words with others. Even giving something as simple as a smile can help another if it cheers them up and brithens their day.
You can always lend a hand to anyone who needs help. You can volunteer your efforts or your resources to the less fortunate. You can also share the Buddha's Teaching to anyone who is interested in them. It is the greatest gift of all.
However, try to do all this without regret, discrimination or ulterior motives. Prictise Dana with kindness, compassion and empathy.