the combination of a step and a stump. It is usually sticking out of nowhere and is a nice place to sit. The most ideal stemp would be found in a naturally occuring staircase made out of tree roots.
Yo bitch i found yo mamma chillin butt neked on my stemp last night
I am so tired, I wish I had a nice stemp to sit on right now. Oh , there's one down yonder.