Besides the winning word, of French-Moroccan origin and first used in the 1920s, here are some of the best words from the final rounds of this year’s Spelling Bee and their definitions according to Merriam-Webster. ...Congratulations to Ananya Vinay, the winner of the competition. And also to her runner-up, Rohan Rajeev. They both spelled Naassene correctly.
Naassene: (pronounced \nāˈaˌsēn) a member of one of the Ophite group of Gnostic sects noted for its worship of the serpent as the principle of generation.
A few past spelling-bee posts are here, here, and here.