cartwheel

Short definition from Wiktionary

Noun

1. 1
   The wheel of a cart.
2. 2
   A gymnastic maneuver whereby the gymnast rotates to one side or the other while keeping arms and legs outstretched, spinning for one or more revolutions.
3. 3
   A crown coin; its value, 5 shillings.
4. 4
   A silver dollar of the larger size produced before 1979.

Verb

1. 1
   To perform the gymnastics feat of a cartwheel.
2. 2
   To flip end over end: normally said of a crashing vehicle or aircraft.