'High' in the Bible

Then said Zeresh his wife and all his friends to him, Let a gallows be made of fifty cubits high, and in the morning speak to the king that Mordecai may be hanged on it: then go in merrily with the king to the banquet. And the thing pleased Haman; and he caused the gallows to be made.

And Harbonah, one of the chamberlains, said before the king, Behold, also, the gallows fifty cubits high, that Haman made for Mordecai, who spoke good for the king, stands in the house of Haman. And the king said, Hang him on it!