pocketbook

Short definition from Wiktionary

Noun

1. 1
   A purse or handbag.
2. 2
   A wallet for paper money.
3. 3
   One's personal budget or financial capacity; the amount one can afford.
4. 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).
5. 5
   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): A romance novel published as a small paperback.