cast up verb5 •To wash something onto the shore. •To bring up as a reproach. •(old-fashioned) To compute.When the Columns N S E W, are compleated, cast up the Figures in the Columns N and S, and also those in the Columns E and W. — 1771 •To apply a cast to a broken limb.The doctor cast up my leg. •(no longer used) To construct by digging.Go through, go through the gates; prepare ye the way of the people; cast up, cast up the highway; gather out the stones; lift up a standard for the people. — 1611 formscasting up · casts up