/'sʌməsɔ:lt; `sʌmɚ,sɔlt/
n acrobatic rolling movement in which a person turns his feet over his head on the ground or in the air （杂技中的）滚翻, 空翻, 跟头
*A gymnast on the trampoline was turning (ie performing) somersaults. 有个体操运动员正在蹦床上做空翻.

v [I, Ipr] perform a somersault or somersaults 做滚翻; 做空翻; 翻跟头
*The child somersaulted across the gymnasium. 那孩子翻着跟头从体育馆这头翻到那头.

n[C]
[Date: 1500-1600; Language: Old French;Origin: sombresaut, from Latin super 'over' + saltus 'jump']
BrE a movement in which someone rolls or jumps forwards or backwards so that their feet go over their head before they stand up again
do/turn a somersault
　Lana turned a somersault in midair.
AmE a forward roll
>somersaultv [I]
　He crashed into the table, somersaulted over it and landed on the carpet.