1 N-COUNT (尤指古代竖立的)单块巨石，独石柱 A monolith is a very large, upright piece of stone, especially one that was put in place in ancient times. (尤指古代竖立的)单块巨石，独石柱

2 N-COUNT 庞大而僵化的组织；单一庞大的体系 If you refer to an organization or system as a monolith, you are critical of it because it is very large and very slow to change, and it does not seem to have different parts with different characters. 庞大而僵化的组织；单一庞大的体系 [disapproval]