Exact historical dictionary sense
Chapter in Webster's 1913 dictionary
The 1913 record labels chapter as noun. Its source-bounded etymology and selected historical definition appear below.
[OF. chapitre, F. chapitre, fr. L. capitulum, dim. of caput head, the chief person or thing, the principal division of a writing, chapter. See Chief, and cf, Chapiter.]
Cross-verified historical senseIn Webster's Revised Unabridged Dictionary (1913), "chapter" is labeled noun. Its etymology is recorded as: "[OF. chapitre, F. chapitre, fr. L. capitulum, dim. of caput head, the chief person or thing, the principal division of a writing, chapter. See Chief, and cf, Chapiter.]" The selected historical definition says: "A division of a book or treatise; as, Genesis has fifty chapters."