pocketbook

noun

1. (US)A purse or handbag.
2. (dated)A wallet for paper money.
3. (figuratively)One's personal budget or financial capacity; the amount one can afford.
4. A small book, particularly (US) a paperback or (UK) notebook able to fit into a pocket (of any genre, from reference work to fine art).

   “The publishers brought out small format pocketbooks of the whole of their nature series.”

   “The pocket books are in trouble. A creeping extralegal censorship threatens to bowdlerize the product[…]”

   “The kit is produced in three parts including a pocket book designed to fit into a shirt pocket for everyday on-the-job use, a more detailed guide and a training CD. The kit includes a hazard reporting and feedback notebook and hazard management process prompt cards to remind workers of common hazards they may encounter in day-to-day operations.”

   “"I have now lost", he wrote in his pocketbook, "the last barrier between me and death..."”

5. (Philippines, broadly)A small book, particularly (US) a paperback or (UK) notebook able to fit into a pocket (of any genre, from reference work to fine art).