plural pinwheels
US
1
: a toy that has a set of thin blades that are arranged like a fan on the end of a stick and that spin like a wheel when air is blown on them
called also (British) windmill
2
: a type of firework that spins like a wheel
called also (British) Catherine wheel
Cite this Entry
“Pinwheel.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/pinwheel. Accessed 22 Jun. 2026.
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