This study examines the semantics of a root form underlying a wide range of Dene lexical expressions. The root evolved from a simple nominal denoting “club” to expressions lexicalizing the movement of stick-like objects and the rotation of helicopter blades. These semantic extensions arise through source-in-target and target-in-source metonymies. Drawing on Cognitive Linguistics, especially the theory of metonymy, offers a method of describing the range of meanings expressed by this root in a concise manner. Focusing on the results of metonymic meaning extensions also opens the way to addressing questions in the history of Dene languages. This study contributes to increasing the typological scope of Cognitive Linguistic approaches and argues for the usefulness of the theory in addressing problems in Dene linguistics.