Stem-winder /(?)/

Stem·-wind·er

Stem-winder

n.
  1. A stem-winding watch. [Colloq.]
  2. Anything of superior quality, as was attributed to the stem-winding watch; -- esp. used to describe a stirring speech, as in the phrase “a stem-winder of a speech” or “delivered a stem-winder”. (Fig.)