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.

Then with one frenzied crescendo of inhuman ululation they stiffened and lay still, and Conan knew that they were dead.