Fol·ly n.; pl. Follies
1. The state of being foolish; want of good sense; levity, weakness, or derangement of mind.
2. A foolish act; an inconsiderate or thoughtless procedure; weak or light-minded conduct; foolery.
What folly 'tis to hazard life for ill. --Shak.
3. Scandalous crime; sin; specifically, as applied to a woman, wantonness.
[Achan] wrought folly in Israel. --Josh. vii. 15.
When lovely woman stoops to folly. --Goldsmith.
4. The result of a foolish action or enterprise.
It is called this man's or that man's =\“folly,” and name of the foolish builder is thus kept alive for long after years.\= --Trench.
n : a revue with elaborate costuming