The base of your spine where your monkey tail would have been before you evolved.
I just broke my monkey stump when skateboarding
by Monkee mischief February 13, 2011
1 more definition
Another word for the Coccyx, as in the area of the body where our tail would be if we were still primates.
I've been riding this bike so long I think i've bruised my Monkey Stump.
by Mitsu1980 April 03, 2010