IPA: /ˈnoʊt.bʊk/
KK: /ˈnoʊtˌbʊk/
A book with blank pages used for writing notes or ideas.
I always carry a notebook to jot down my thoughts.
**Notebook** → It is formed from "note" (from Latin *nota*, meaning a mark or sign) and "book" (from Old English *bōc*, meaning a written work or volume). A notebook is a book used for writing notes or marks.
Think of a 'mark' or 'sign' ('nota') that you write down in a 'written work' ('bōc') — that's what a notebook is for.