pock ‧ et ‧ book /ˈpɒkətbʊk, ˈpɒkɪtbʊk $ ˈpɑː-/ BrE AmE noun [countable]
1 . American English the amount of money that you have, or your ability to pay for things SYN pocket British English :
The aim was to provide a car for every age and pocketbook.
Older voters are most concerned about pocketbook issues (=that concern money) .
2 . American English old-fashioned a ↑ handbag
3 . American English old-fashioned a ↑ wallet
4 . British English old-fashioned a ↑ notebook