poison pen

Noun

 * 1)  A manner, means, or tone of expression had by a written work, characterized by spitefulness, defamation, and/or intimidation directed toward a person, organization, or point of view.
 * 2)  Of, pertaining to, or possessing such a manner of expression.
 * 1)  Of, pertaining to, or possessing such a manner of expression.
 * 1)  Of, pertaining to, or possessing such a manner of expression.
 * 1)  Of, pertaining to, or possessing such a manner of expression.