'Thick' in the Bible

If running with the fighting-men has made you tired, how will you be able to keep up with horses? and if in a land of peace you go in flight, what will become of you in the thick growth of Jordan?

See, he will come up like a lion from the thick growth of Jordan against the resting-place of Teman: but I will suddenly make him go in flight from her; and I will put over her the man of my selection: for who is like me? and who will put forward his cause against me? and what keeper of sheep will be able to keep his place before me?

See, he will come up like a lion from the thick growth of Jordan against the resting-place of Teman: but I will suddenly make them go in flight from her; and I will put over her the man of my selection: for who is like me? and who will put forward his cause against me? and what keeper of sheep will keep his place before me?

And as for the pillars, one pillar was eighteen cubits high, and twelve cubits measured all round, and it was as thick as a man's hand: it was hollow.