scrubwoman
noun
scrub·wom·an ˈskrəb-ˌwu̇-mən 
: charwoman
Example Sentences
Recent Examples on the Web The prime suspect was a scrubwoman in the building who was acquitted. 
Jc Reindl, Detroit Free Press, 31 Aug. 2017
Jc Reindl, Detroit Free Press, 31 Aug. 2017 Word History
First Known Use
1873, in the meaning defined above