A secondary heading within a larger section, often used in newspapers, magazines, or reference works. Contrasts with 大見出し (main heading).
See also: 大見出し
By reading the subheadings of the article, you can grasp the outline of the content.
Compound of 小 (small) and 見出し (heading). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.