through-line
n.—Gloss: an acting method of imagining a character’s continuous motivational path. «Actresses are constantly constructing new characters, and when they’re not in costume on a set or a stage, they’re typically in jeans or something nondescript. In going from role to role, she said, “It’s easy to lose your personal through-line.”» —“An Eliza Doolittle Onstage as Well as on the Red Carpet” by Cathy Horyn New York Times Oct. 25, 2007. (source: Double-Tongued Dictionary)
Further reading
Colette Hiller’s Colossal Words for Kids: 75 Tremendous Words: Neatly Defined to Stick in the Mind (Bookshop|Amazon) uses clever rhymes to help children learn big, fun-to-say words like magnanimous, discombobulated, and acquiesce. This...
Jacuzzi and silhouette are eponyms — that is, they derive from the names of people. An Italian immigrant to California invented the bubbly hot tub called a jacuzzi. And the word silhouette commemorates a penny-pinching treasury secretary who lasted...