attachablebase

noun
UK /əˈtætʃəbl beɪs/
US /əˈtætʃəbəl beɪs/

A bottom part that can be joined to something else.

The lamp has an attachable base so it can stand on the table.


OTHER MEANINGS

2. The part of a device that can be fastened to a stand or surface.

The camera's attachable base lets you screw it onto a tripod.

3. A support piece that can be added to a toy to keep it upright.

The robot toy comes with an attachable base to help it stand.

4. A bottom section that can be fixed onto a container or tool.

The blender's attachable base locks onto the jar.