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.
The images conveyed in wolf folktales vary: in many they are depicted as ruthless and fierce; in others they have an image of nobility and loyalty. In Norse Mythology, the Fenrir was a symbol of chaos who eventually swallows Odin whole. However, the wolf was also associated with warriors, and Odin had two wolves as loyal companions. We are all familiar with tales such as Little Red Riding Hood and The Three Little Pigs.