Sentence:  Already, at three o'clock, Kezia, the good-hearted, bad-tempered housemaid, who regarded all people that came to the sale as her personal enemies, the dirt on whose feet was of a peculiarly vile quality, had begun to scrub and <WSD>swill</WSD> with an energy much assisted by a continual low muttering ... 
Meaning of the word marked with <WSD> tags:  To wash (something) by flooding with water.