'Dreams' in the Bible

Saul inquired of the LORD, but the LORD did not answer him, either through dreams or Urim or through prophets.

Samuel told Saul, "Why did you disturb me by bringing me up?" Saul said, "I'm in great distress. The Philistines are waging war against me. God has departed from me and won't answer me anymore, either by messages written by the hand of the prophets or by dreams. So I've summoned you to tell me what I should do."