|Origin:||sui 'of oneself' + English -cide|
su‧i‧cide [uncountable and countable]
the act of killing yourself: ➔ see usage note kill1
More people commit suicide at Christmas than at any other time.
My mother attempted suicide on many occasions.
He apparently left a suicide note (=letter explaining his reasons for killing himself).
something you do that ruins your good position in politics or the economy:
He said a vote for Labour would be a vote for economic suicide.
an attack etc in which the person who carries out the attack deliberately kills himself or herself in the process of killing other people
an occasion when someone deliberately threatens a police officer in order to make the police officer shoot, as a way of commiting suicide