From Longman Dictionary of Contemporary Englishslash your wristsslash your wriststo cut the veins in your wrists with the intention of killing yourself → slash
Examples from the Corpus
slash your wrists• In September he tried to kill himself by slashing his wrists.• On other occasions he had taken a drugs overdose and slashed his wrists.• Last December, he took a drugs overdose and in September slashed his wrists and groin with a smuggled razor blade.• Mr Jamshidi has recently left hospital after slashing his wrists in his own suicide attempt.• She had made determined attempts at suicide by slashing her wrists several times.• Rather than betray the others, Stockdale broke a window and slashed his wrists with a jagged shard of glass.• Four other suicide attempts, including slashing her wrists with a razor blade, were also detailed.• Last autumn he came within a few minutes of death when he slashed his wrists with a razor blade. 