What is "climaxes"

Usage examples of "climaxes".

The two stories, except for the climaxes, were completely different, but I promptly wrote the other author and told him that although he had my word that there was no conscious imitation, I would withdraw the story from circulation and it would never again appear in any anthology, any collection, any form whatever--and it never has.

And it certainly wasn't normal to have frighteningly intense climaxes night after night, while sleeping alone.