The crossword solution for the term 'Professor at Hogwarts' is 'Snape'. Severus Snape was a professor at Hogwarts School of Witchcraft and Wizardry, teaching Potions and Defence Against the Dark Arts. He was a half-blood wizard who was born to Eileen Prince and Tobias Snape. He was a Death Eater, but later became a double agent, working for both Voldemort and Dumbledore. He was known for his cold and sarcastic attitude, but he was also a loyal friend and ally.