som ‧ er ‧ sault /ˈsʌməsɔːlt $ -ərsɒːlt/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Old French ; Origin: sombresaut , from Latin super 'over' + saltus 'jump' ]
1 . British English 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.
2 . American English a ↑ forward roll
—somersault verb [intransitive] :
He crashed into the table, somersaulted over it and landed on the carpet.