casual แปลว่า

"Of the scavagers proper there are, as in all classes of unskilled labour, that is to say, of labour which requires no previous apprenticeship, and to which any one can “turn his hand” on an emergency, two distinct orders of workmen, “the regulars and casuals” to adopt the trade terms; that is to say, the labourers consist of those who have been many years at the trade, constantly employed at it, and those who have but recently taken to it as a means of obtaining a subsistence after their ordinary resources have failed."

"At 15, he became a casual: one of the label-wearing, wedge-flicking, swaggering hooligan peacock boys who dominated the north-west when I was growing up. Casuals were working-class lads (called Perry boys in Manchester) who loved football, fighting and brilliant sportswear."

"During the great prevalence of vagrancy, the cost of the sick was far greater than the expense of relief. In the quarter ending June 1848, no less than 322 casuals were under medical treatment, either in the workhouse of the Wandsworth and Clapham union or at the London Fever Hospital."