IPA: /ˈtrɛsəlˌwɜrk/
KK: /ˈtrɛsəlˌwɜrk/
A framework made of beams or supports that holds up a structure, like a bridge or a platform.
The old railway bridge was supported by a sturdy trestlework that had stood for decades.
Trestlework → The word is formed from "trestle" (from Old French *trestel*, meaning a framework or support) and "work" (from Old English *weorc*, meaning labor or effort). Trestlework refers to a structure made of trestles that supports something, typically in construction or carpentry.
Think of a 'framework' ('trestle') that supports 'work' ('work') — that's what trestlework means.
No commonly confused words.