As a proper noun joss
As a verb joss
is (fandom) to invalidate a fan theory or original element of a fanwork through the introduction of new canon or retconning.
As a noun koss is
A Chinese household divinity; a Chinese idol.
* 1977 , , The Honourable Schoolboy , Folio Society 2010, p. 178:
- She had twisted a piece of heather into her mail box for good joss , and this was the safety signal.
* joss stick
* joss paper
* joss house