playbook /ˈpleɪ.bʊk/ noun4 •(US) A book of strategies (plays) for use in American football (and by extension other sports or disciplines). •(figurative) A book or (especially) any set of commonly employed tactics, strategies, and tips.Security administrators can create a series of runbooks and playbooks that can be used in response to a wide range of incident response activities. — 2021 •A book containing the text of a play or plays. •A book of games and amusements for children. formsplaybooks