ex·tort /ik-'stȯrt/ vt [Latin extortus, past participle of extorquere to remove by twisting, obtain by force, from ex- out + torquere to twist]: to obtain (as money) from a person by force, intimidation, or undue or unlawful use of authority or power
ex·tort·er n
ex·tor·tive /-'stȯr-tiv/ adj
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.