Definition of "washerwoman"

‘I wish it would rain,’ continued she; ‘only we are going to have a six-week’s wash to-morrow, and that’s a heavy job for the poor creatures. La! don’t you pity washerwomen in hot weather; it’s the hardest work that’s done.’

1810, [anonymous] […], chapter XXVIII, in Splendid Follies. A Novel, […]. Founded on Facts., volume III, London: […] J[ames] F[letcher] Hughes, […], pages 123–124