D defs.my
Entry 4 senses Webster, 1913

Folly

/fäl'-ē/ · Fol·ly · IPA /ˈfɑli/
01 n. The state of being foolish; want of good sense; levity, weakness, or derangement of mind.
pl. Follies ((#))
  1. 1.
    The state of being foolish; want of good sense; levity, weakness, or derangement of mind.
  2. 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. 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. 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.