[pock.et.book] n (1617) 1 often pocket book : a small esp. paperback book that can be carried in the pocket
2: a flat typically leather folding case for money or personal papers that can be carried in a pocket or handbag 3 a: purse b: handbag 2
4: financial resources: income
[2]pocketbook adj (1894): relating to or involving economic interests "~ issues"