headnote

/ˈhɛdˌnoʊt/
noun
  1. A brief note or summary at the beginning of a chapter, article, or legal case, giving an overview of the content.
    • The editor added a headnote to the article to clarify the author's background.
    • Law students often read the headnote of a case to understand its key points before diving into the full text.
    • The headnote of the chapter explained the main themes of the lesson.
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