compulsion n1 : an act of compelling (as by threat or intimidation)
: coercion [a payment exacted by lawless "E. A. Farnsworth and W. F. Young"]
2 : the state of being compelled
: duress NOTE: Compulsion can make a contract voidable or be a ground for damages or restitution. Compulsion may also be a defense to a criminal act.
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.