擎天柱 qíngtiānzhù pillar that supports the sky Definitions Defs Origin Strokes Stroke Words Sentences Sents qíngtiānzhù pillar that supports the sky · mainstay 擎天 qíngtiān to hold up the sky to hold up the sky; used to describe something or someone extremely strong, tall, and powerful柱 zhù noun pillar pillar; column; post; upright; an upright structural support in a buildingqíngtiānzhù Optimus Prime 擎 qíng phonetic 天 tiān phonetic 柱 zhù phonetic