Definitions

1. noun

the main part of a tree that contains the trunk, branches, and roots, typically consisting of the main stem and branches of a tree, or a main structural or supporting part of something

“The engineer studied the trunkwork of the bridge to ensure its stability.”

2. noun

work or labor, especially of a skilled nature, that is done on the main structural or supporting parts of something

“The construction company employed skilled workers to do the trunkwork on the new skyscraper.”