"woman hired by the day to do odd work," 1590s, from Middle English char, cherre "turn of work" (see chore) + woman. Probably it is older than the attested records: An Alicia Charwoman appears in the Borough of Nottingham records in 1379.
Charterhouse
Chartism
Chartres
chartreuse
chartulary
charwoman
chary
Charybdis
chase
chaser
chasing