articulatedbase
nounUK /ɑːˈtɪkjʊleɪtɪd beɪs/
US /ɑːrˈtɪkjəleɪtɪd beɪs/
A base is the bottom part that holds something up, and articulated means it can bend.
The robot's articulated base let it turn its body from side to side.
OTHER MEANINGS
2. A support stand with joints that lets a machine or tool move in different directions.
The camera sat on an articulated base so it could point anywhere.
3. The jointed bottom part of a toy figure that allows it to pose.
The action figure's articulated base let it stand in a running pose.
4. A flexible foundation in engineering that bends instead of breaking.
Engineers used an articulated base to keep the bridge steady during earthquakes.