structural skeleton; framework; frame
Refers to the load-bearing skeleton of a building, such as beams and columns, before finishing. Used in architecture and construction contexts.
The structural skeleton of this building is made of steel.
Once the framework construction is complete, we will move on to the interior work.
precursor (biochemical)
A nonstandard spelling of 躯体, “structural frame or body,” using the common character 駆 in place of the uncommon 躯.