Judges 7:15 And it was so, when Gideon heard the telling of the dream, and the interpretation thereof, that he worshipped, and returned into the host of Israel, and said, Arise; for the LORD hath delivered into your hand the host of Midian.
Here Gideon hears the interpretation of a dream and then worships. We do not have many details as to what worship entails. In the United States, we typically use it to refer to music. So far, in the Bible, we have seen no music associated with worship.
What we do know is the actual meaning of the word. The English word has the following implications:
As a noun, it refers to Excellence of character, dignity, worth, worthiness.
As a verb, the word worship means to adore; to pay divine honors to; to reverence with supreme respect and veneration.
The Hebrew word has the root meaning to be prostrate before. It would mean bowing humbly with your face toward the earth before a higher person.
So Gideon hears the interpretation and humbly bows before the Lord in praise and thanksgiving. That is worship here in this sense.