cachinnate

Then right under me commenced a vehement rasping and scratching in the floor, accompanied by continuous groans and cachinnation.

And there it swung to and fro, moved by the violence of its cachinnation.

Then, look at the baby, when it has turned into a little boy or girl, and come up in some degree to the cachinnation.

Why, one might as well talk of a laughing death's-head,—the cachinnation of a monk's memento mori.