Definition of "labourer"

This time was most dreadful for Lilian. Thrown on her own resources and almost penniless, she maintained herself and paid the rent of a wretched room near the hospital by working as a charwoman, sempstress, anything. In a moment she had dropped to the level of a casual labourer.

1918, W[illiam] B[abington] Maxwell, chapter XVII, in The Mirror and the Lamp, Indianapolis, Ind.: The Bobbs-Merrill Company