Allegory

Debora B Schwartz Practical definitions and examples of medieval allegories.

Debra Bruch Abstract from academic paper with brief but useful section discussing allegory as a form of Medieval drama (look under sub-heading ‘Transition to Defense’).

OldAndSold Article discussing allegorical comedies in 16th century England.

LitWeb Definition of allegory.

Nellen Homepage Good, brief definition of allegory.

University of North Carolina Definition of allegory.

Wikipedia Various definitions of the term allegory and its uses in literature, the arts etc.

WiseGeek Extended definition of allegory with examples.