the action of killing oneself intentionally

in January last year he died by suicide

she committed suicide at the age of forty

drug-related suicides

a suicide attempt

a course of action that is disastrously damaging to oneself or one's own interests

it would be political suicide to restrict criteria for unemployment benefit

a running drill consisting of a sprint to a set point (especially a line on a basketball court) and back to the start, immediately followed by additional sprints of lengthening distances

we shot free throws and if we missed we ran suicides

intentionally kill oneself

he leaves the service and then suicides