A Quick and Simple Dictionary

canon

1. Noun.  A generally accepted principle.
2. Noun.  (anchor, literary) A group of literary works that are generally accepted as representing a field.
3. Noun.  The works of a writer that have been accepted as authentic.
4. Noun.  A eucharistic prayer, particularly, the Roman Canon.
5. Noun.  A religious law or body of law decreed by the church.
6. Noun.  A member of a cathedral chapter.
7. Noun.  A piece of music in which the same melody is played by different voices, but beginning at different times.
8. Noun.  (context, fandom) Those sources, especially including literary works, which are generally considered authoritative regarding a given fictional universe.