n. & v.
--n.
1. a the intentional killing of oneself. b a person who commits suicide.
2 a self-destructive action or course (political suicide).
3 (attrib.) Mil. designating a highly dangerous or deliberately suicidal operation etc. (a suicide mission).
--v.intr. commit suicide.
Phrases and idioms:
suicide pact an agreement between two or more people to commit suicide together.
Etymology: mod.L suicida, suicidium f. L sui of oneself