[ˈfɒli], (Noun)

Definitions:
- lack of good sense; foolishness
(e.g: an act of sheer folly)

- a costly ornamental building with no practical purpose, especially a tower or mock-Gothic ruin built in a large garden or park

- a theatrical revue with glamorous female performers
(e.g: the Ziegfeld Follies)


Phrases:

Origin:
Middle English: from Old French folie ‘madness’, in modern French also ‘delight, favourite dwelling’ (compare with folly), from fol ‘fool, foolish’