IPA: /ˈfɔːlswɜːrk/
KK: /fɔlswɜrk/
A temporary structure used to support a building or bridge during construction until it can stand on its own.
The workers set up falsework to support the bridge while it was being built.
Falsework is formed from "false" (from Old English *fals*, meaning not true or incorrect) and "work" (from Old English *weorc*, meaning something done or a deed). The term refers to temporary structures used in construction that are not part of the final work, hence they are 'false' in that sense.
Think of 'false' meaning not true and 'work' meaning something done. This helps you remember that falsework refers to temporary structures that are not part of the final construction.