cartwheel

Etymology

cart + wheel

noun

1. The literal wheel of a cart.
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. 1859, J.C. Hotten, A Dictionary of Modern Slang, Cant, and Vulgar Words
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.