Definition of pipe for English Language Learners. : 1  a long, hollow tube for carrying water, steam, gas, etc. : 2  a tube with a small bowl at one end that is used for smoking tobacco. : 3  a musical instrument that is in the shape of a tube, has holes along the top, and is played by blowing.
The Blood of Olympus (mentioned) Lupa is the immortal Roman wolf goddess who trains Roman demigods in the ways of Rome. She trains the demigods at the Wolf House, then sends them to Camp Jupiter where they can join the Twelfth Legion.
Hestia, daughter of Cronus and Rhea. Rhea is the goddess of Earth and almost everything, so she was one of the first goddesses in Mount Olympus. Cronus is a Titan, and the leader of the titans, gave birth to Hestia. Goddess of homes, the hearth, cooking and fire. She can cause natural disasters like volcano eruptions and can do much harm if she's angry. Hestia is also a maiden, who wants to have nothing to do with men.