a movement in which somebody turns over completely, with their feet over their head, on the ground or in the air 翻滚；空翻；筋斗 to do/turn a somersault 做翻滚动作 He turned back somersaults. 他做了几个后空翻。 🔊🔊 - (figurative)
Her heart did a complete somersault when she saw him. 她见到他，心里咯噔了一下。 🔊🔊
Word Originmid 16th cent. (as a noun): from Old French sombresault, from Provençal sobresaut, from sobre ‘above’ + saut ‘leap’.