canon

1 canon /ˈkænən/ noun
plural canons
1 canon
/ˈkænən/
noun
plural canons
Britannica Dictionary definition of CANON
[count]
1 
formal : an accepted rule or guide about how people should behave or about how something should be done
2 
a  : a group of books, poems, plays, etc., that are traditionally considered to be very important
b  : the group of books, poems, plays, etc., that a particular author is known to have written
c  : a list of books that are considered to be part of a religion's official text
3 
: a piece of music in which the same melody is started at different times by each of the different groups of voices or instruments
2 canon /ˈkænən/ noun
plural canons
2 canon
/ˈkænən/
noun
plural canons
Britannica Dictionary definition of CANON
[count]
: a Christian priest who works in a cathedral