pivotbase
nounUK /ˈpɪvətbeɪs/
US /ˈpɪvətbeɪs/
The base is the part that holds a turning thing in place.
The robot's arm spun smoothly on its pivotbase.
OTHER MEANINGS
2. The central point where something turns or balances.
The dancer found her pivotbase and spun without falling.
3. A starting place for a big change or new plan.
The small shop became the pivotbase for the whole neighborhood project.
4. In games, a fixed spot that players turn around.
Tag the pivotbase before you run to the next zone.