Matricide

['mætrɪsaɪd;'meɪtrɪ-] or ['mætrə'saɪd]

(noun.) the murder of your mother.

(noun.) a person who murders their mother.

Inputed by Angie--From WordNet

(n.) The murder of a mother by her son or daughter.

(n.) One who murders one's own mother.

Inputed by Agnes

n. a murderer of one's own mother: the murder of one's own mother.—adj. Mat′ricidal

Checker: Lucy