Wordnet 3.0
NOUN (1)
1.
a criminal who extorts money from someone by threatening to expose embarrassing information about them;
[syn: blackmailer, extortioner, extortionist]
The Collaborative International Dictionary of English v.0.48:
extortionist \ex*tor"tion*ist\, n.
One who practices extortion.
Syn: extortioner. [PJC]
WordNet (r) 3.0 (2006):
extortionist
n 1: a criminal who extorts money from someone by threatening to
expose embarrassing information about them [syn:
blackmailer, extortioner, extortionist]