Dear JazzO: My dictionary gives as third definition " A person who commits suicide."

From Gilbert and Sullivan:

On a tree by a river a little tom-tit
Sang "Willow, titwillow, titwillow!"
And I said to him, "Dicky-bird, why do you sit
Singing 'Willow, titwillow, titwillow'?"
"Is it weakness of intellect, birdie?" I cried,
"Or a rather tough worm in your little inside?"
With a shake of his poor little head, he replied,
"Oh, willow, titwillow, titwillow!"

He slapped at his chest, as he sat on that bough,
Singing "Willow, titwillow, titwillow!"
And a cold perspiration bespangled his brow,
Oh, willow, titwillow, titwillow!
He sobbed and he sighed, and a gurgle he gave,
Then he plunged himself into the billowy wave,
And an echo arose from the suicide's grave--
"Oh, willow, titwillow, titwillow!"