Headnote n. : A note at the head of a page or chapter; in law reports, an abstract of a case, showing the principles involved and the opinion of the court.

Example:
How do I put a Headnote in a Word document?

Taxonomy
Headnote, court, free encyclopedia, criminal abortion, statutes, court decision, United States Supreme Court, reporter of decisions, abortion laws, Roe v. Wade, single woman, nexus, claim, adjudicated, contentiousness, dispute, search, brief summary.

Defination from the web:
headnote is a brief summary of a particular point of law that is added to the text of a court decision to aid readers in interpreting the highlights of an opinion. ... Headnote: A pregnant single woman, thwarted by her state's criminal abortion laws from obtaining an abortion which ...