cast up one's accounts verb2 •To come to an accounting; to examine and strike the balance of debt and credit; reckon.He was very careful to cast up his accounts every quarter ; which he did, that he might spend neither more nor less than what he could spend every year. — 2005 •(no longer used) To vomit.A foul taste. Vomit. 'Struth! Embarrassing memory flooded back. He'd cast up his accounts in front of a woman. — 2004 formscasting up one's accounts · casts up one's accounts