What does Esther 5:14 mean?

His wife Zeresh and all his friends said, 'Why don't you have a pole set up, seventy-five feet tall? In the morning, ask the king to have Mordecai impaled on it. Then you can go to the banquet with the king in a good mood.' Haman liked this idea, so he ordered the pole to be set up. Esther 5:14 - Modern Text Bible

(Haman's friends and wife encourage him to get rid of Mordecai, and he eagerly follows their advice, setting up the means for Mordecai's execution.)