chapter chapter /ˈtʃæptɝ/

noun

1. () A subdivision of a written work; usually numbered and titled  ( chapter )
   a subdivision of a written work; usually numbered and titled
    He read a chapter every night before falling asleep
   he read a chapter every night before falling asleep
   
2. () [ N. American] A local branch of some fraternity or association  ( chapter [ N. American] )
   a local branch of some fraternity or association
    He joined the Atlanta chapter
   he joined the Atlanta chapter
   
3. () Any distinct period in history or in a person's life  ( chapter )
   any distinct period in history or in a person's life
    The industrial revolution opened a new chapter in British history
   the industrial revolution opened a new chapter in British history
    The divorce was an ugly chapter in their relationship
   the divorce was an ugly chapter in their relationship
   
4. A series of related events forming an episode  ( chapter )
   a series of related events forming an episode
    A chapter of disasters
   a chapter of disasters
   
5. An ecclesiastical assembly of the monks in a monastery or even of the canons of a church  ( chapter )
   an ecclesiastical assembly of the monks in a monastery or even of the canons of a church