n. 1 money in coins or notes. 2 (also cash down) full payment at the time of purchase. 3 colloq. wealth. v. give or obtain cash for (a note, cheque, etc.). o cash in 1 obtain cash for. 2 colloq. (usu. foll. by on) profit (from); take advantage (of). cash up count and check the day’s takings. [Latin: related to case]