'Thick' in the Bible

Absalom happened to meet the servants of David. Absalom was riding on his mule, and the mule went under the thick boughs of a great oak, and his head caught hold of the oak, and he was taken up between the sky and earth; and the mule that was under him went on.

He bowed the heavens also, and came down. Thick darkness was under his feet.

He made darkness pavilions around himself: gathering of waters, and thick clouds of the skies.