Cast" steel` (?). See Cast steel, under Steel.
Cas"u*al (?), a. [OE. casuel, F. casuel, fr. L. casualis, fr. casus fall, accident, fr. cadere to fall. See Case.] 1. Happening or coming to pass without design, and without being foreseen or expected; accidental; fortuitous; coming by chance.
Casual breaks, in the general system.
W. Irving.