the GNU version of the Collaborative International Dictionary of English
n. The murder of a mother by her son or daughter.
n. One who murders one's own mother.
The Century Dictionary and Cyclopedia
n. One who kills his or her mother.
n. The killing or murder of one's mother.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a person who murders their mother
n. the murder of your mother
Word Usage
"But thou shalt not be called the matricide, when thou hast slain her, but dropping this name thou shalt arrive at better things, being styled the slayer of the havoc-dealing"