(informal) Any of the antagonists that briefly appear in episodic forms of fiction, especially television series.

plural of Rogation Week

(Christianity) The week in which the Rogation Days occur.

(chiefly US, idiomatic) The week during which new members are required to undergo undignified rites of initiation or gruelling discipline in order to be accepted into a fraternity, sorority, secret society, military group, etc.

Alternative form of hell week

plural of schoolies week

(Australia) A festival during which finishing high school students celebrate the end of their studies, and associated freedom.

plural of light week

plural of spirit week

(US) The week leading up to homecoming, during which school students dress up in unusual themed clothing.