ululation

Again and again that melancholy ululation, with never a consonantal sound to break it, went forth into the night.

It was badly stage-managed; for even the rawest investigators must be struck by the absence of the usual feminine ululation.

All that resulted was a continuation of that mournful ululation like a wail out of eternity.

It was odd to see the effect that the ululation of the wild cat crying out in the woods had had upon the strapping frontiersman.