low-percentage dynamite used to uproot stumps.
- 1930  [Advert.] Polar Stumping Powder plays a big part in British Columbia's great logging camps.
- 1942  He's given me an idea of how you estimate the number of sticks of stumping powder you need to blow up a certain-sized stump.
- 1961  "She--she shore was mad--she . . . went up like stumpin' powder."