playbook (Noun) — A notebook containing descriptions and diagrams of the plays that a team has practised (especially an American football team).
playbook (Noun) — A book containing the scripts of one or more dramatic plays. ex. "the 1963 playbook leaves out the whole first scene"
playbook (Noun) — A scheme or set of strategies for conducting a business campaign or a political campaign. ex. "they borrowed a page from the playbook of the opposition"