follies

Etymology 1

From French folies.

noun

1. plural of folly
   It has been a long time since new follies were springing up across the great estates of Britain. But the owners of Doddington Hall, in Lincolnshire, have brought the folly into the 21st century, by building a 30ft pyramid in the grounds of the Elizabethan manor. 7 September 2014, “Doddington's garden pyramid is a folly good show: The owners of a Lincolnshire stately home have brought the folly into the 21st century, by building a 30ft pyramid [print edition: Great pyramid of Lincolnshire, 6 September 2014, p. G2]”, in The Daily Telegraph, London
2. (uncountable) A lavishly-produced theatrical revue characterized by major stars, huge casts, and opulent costumes and scenery.
   The most famous Broadway theatrical revues of all time were the Ziegfeld Follies.

Etymology 2

verb

1. third-person singular simple present indicative of folly