jutting

“By degrees an union takes place between them, and at the same time the osseous substance thickens at its first points of existence, at the juttings representing the grinding tubercles[…]”

“He leaped forward, brandishing his knife, while the Sons of the Egg fell in behind him. The warlocks began to close ranks, falling back to make a stand under the jutting edge of the roof, where they could protect the orrery. Bork and Ser Perth were among them, bloody but hopelessly determined.”