calepin
/kælˈpɪn/Definitions
1. noun
A small notebook or booklet used for jotting down notes or memoranda, especially by a student or scholar.
“The student used a calepin to take notes during the lecture.”
2. noun
A small book or notebook used by a scholar or student for memoranda, notes, or references.
“The researcher consulted her calepin for reference material.”