a large single vertical block of stone, especially one that was shaped into a column by people living in ancient times, and that may have had some religious meaning （尤指古人凿成、表示某种宗教意义的）单块巨石，独石柱 - (often disapproving)
a single, very large organization that is very slow to change and not interested in individual people （少有变化，不关心个人的）单一庞大的组织
Word Originmid 19th cent.: from French monolithe, from Greek monolithos, from monos ‘single’ + lithos ‘stone’.