IPA: /ˈwɜːkhaʊs/
KK: /ˈwɜrkˌhaʊs/
A place where people, often the poor or those who have committed minor crimes, are housed and made to work, usually in difficult conditions.
In the 19th century, many people were sent to the workhouse if they could not support themselves.
Workhouse → It is formed from "work" (from Old English *weorc*, meaning labor or effort) and "house" (from Old English *hus*, meaning dwelling or shelter). A workhouse is a place where people are required to work, often in exchange for housing or support.
Think of a 'house' where people go to 'work' — that's why a workhouse is a place for labor.
No commonly confused words.