1. 
   Jigai
   The word 自害 means "suicide" in Japanese. The usual modern word for suicide is 自殺. Related words include 自決, 自尽 and 自刃. Jigai refers to suicide by both females and males. Some females belonging to samurai families committed suicide by cutting the jugular vein with a knife such as...
   Found op http://en.wikipedia.org/wiki/Jigai
   
   
2. 
   JIGAI
   Suicide by cutting the throat.
   Found op http://www.samuraisword.com/glossary/index.htm
   
   

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