'Thick' in the Bible

Give glory to the Lord your God,Before He brings darknessAnd before your feet stumbleOn the dark and shadowy mountains,And while you are longing for lightHe turns it into the shadow of death,And makes it into thick darkness.

Concerning the pillars, the height of each pillar was eighteen cubits (twenty-seven feet), and a line [an ornamental molding] of twelve cubits (eighteen feet) went around its circumference; it was four fingers thick, and [the pillar was] hollow.