cartwheel

noun

1. The wheel of a cart.

   “Near-synonyms: wagon wheel, artillery wheel”

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. (UK, historical, obsolete, slang)A crown coin; its value, 5 shillings.

   “Half-a-crown is known as an alderman, half a bull, half a tusheroon, and a madza caroon; whilst a crown piece, or five shillings, may be called either a bull, or a caroon, or a cartwheel, or a coachwheel, or a thick-un, or a tusheroon.”

4. (US, historical, obsolete, slang)A silver dollar of the larger size produced before 1979.

verb

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

   “The race car hit a bump and cartwheeled over the finish line.”