Meaning

noun a subdivision of a written work; usually numbered and titled

noun any distinct period in history or in a person's life

noun a local branch of some fraternity or association

originFrom Middle English chapitre, from Old French chapitre, from Latin capitulum (“a chapter of a book, in Medieval Latin also a synod or council”), diminutive of caput (“a head”); see capital, capitulum, and chapiter, which are doublets of chapter.

Etymology from Wiktionary, CC BY-SA 3.0