chastise with the valour of my tongue/All that impedes thee... (1.5.28-9)
i.e., renounce with my words of tremendous bravery any reasons you may find not to commit Duncan's murder.
For more on this passage please see the annotations at the bottom of the main page of Macbeth 1.5
How to cite this article:
Mabillard, Amanda. Macbeth Glossary. Shakespeare Online. 20 Aug. 2000. (date when you accessed the information) < http://www.shakespeare-online.com/plays/macbeth/macbethglossary/macbeth1_1/macbethglos_chastise.html >.