天崩地陷 tiānbēngdìxiàn earth-shattering Origin Definitions Defs Strokes Stroke Words Sentences Sents 天 tiān noun sky sky; heavens; the space above the earth崩 bēng verbnoun to collapse to collapse or fall into ruins; to break down or fall apart地陷 dìxiàn ground subsidence The sinking or settling of the ground surface, often caused by geological movement, mining, or the excessive extraction of groundwater.