jotter

noun

Etymology: Etymology tree English jot English -er English jotter From jot + -er.

1. A memorandum book.

   “While he muttered over her jotter, a fat tongue-tip stuck in the corner of his mouth, she leaned against the bar and hummed a tune whiningly and made a great show of not looking in our direction.”

2. An exercise book.
3. Someone who jots.