somersault somersault /ˈsʌmɝˌsɔlt/

noun

1. () An acrobatic feat in which the feet roll over the head (either forward or backward) and return  ( somerset [Dialect] , summersault [Archaic] , summerset , flip , somersault , somersaulting )
   an acrobatic feat in which the feet roll over the head (either forward or backward) and return
    The gymnast executed a perfect somersault, landing gracefully on the mat
   The gymnast executed a perfect somersault, landing gracefully on the mat
   

verb

1. Do a somersault  ( somersault )
   do a somersault