Quote from Martin in Frasier Has Spokane
Daphne: Now, I think we're going to need a smaller drill bit. Where's the chuck key? Martin: The what? Daphne: You know, that thing there. Martin: The tighten-er. Daphne: It's called the chuck key. Martin: Well, maybe in England. Here in the U.S., it doesn't have a specific name.