note·book 
/ˈnoʊtˌbʊk/ noun
plural note·books /ˈnoʊtˌbʊk/ noun [count] 1 : a book with blank pages that is used for writing notes
▪ Take out your notebook and write down some of your ideas. ▪ She kept a notebook for her poetry. 2 : a small computer that is designed to be easily carried —called also notebook computer
▪ Take out your notebook and write down some of your ideas. ▪ She kept a notebook for her poetry.
