blotter

/B L AA1 T ER0/
noun
  1. 1

    A piece of blotting paper in a pad as a piece of desk furniture

  2. 2

    (law enforcement) a daily register of arrests and other events in a police station

  3. 3

    A register of the related events made in the form of the list of times and brief descriptions

    โ€œAll transactions were entered in the cash blotter and agent's subsidiary ledger.โ€

  4. 4

    A portion of blotter acid.

Source: https://en.wiktionary.org/wiki/blotter