folly
/ˈfɒlɪ/noun
(pl. -ies)
1
- mass noun lack of good sense; foolishness愚笨, 愚蠢：
an act of sheer folly.
绝对愚蠢之举。
1.1
- count noun a foolish act, idea, or practice蠢行, 傻念头, 蠢事：
the follies of youth.
青年人的傻事。
2
- a costly ornamental building with no practical purpose, especially a tower or mock-Gothic ruin built in a large garden or park（仅供观赏的）巨资兴建的无用建筑, 华而不实的建筑（尤指大花园或公园中的塔或仿哥特式遗迹）。
3
Follies
a theatrical revue with glamorous female performers（迷人女演员表演的）时事讽刺剧：in names the Ziegfeld Follies.齐格菲尔德时事讽刺剧。
词源
Middle English: from Old French folie 'madness', in modern French also 'delight, favourite dwelling' (compare with sense 2), from fol 'fool, foolish'.