落體 luòtǐ falling body Origin Definitions Defs Strokes Stroke Words Sentences Sents 自由落体 zìyóuluòtǐ free fall the motion of a body falling under the force of gravity alone自由落体运动 zìyóuluòtǐyùndòng free fall (physics) free falling movement; the motion of an object falling solely under the influence of gravity