Funnily enough the other references to suicide in that dictionary are all to do with sport

What? No suicide blonde? I wondered at the phrase, used in an INXS song*, until I saw the phrase, with punchline, in a movie made in about 1930.





*Suicide Blonde

Suicide blonde was the colour of her hair
Like a cheap distraction
For a new affair...


http://www.lyricsdomain.com/lyrics/11964/