Pinwheel definition

(1) A circular firework that spins round and round emitting colored fire

(2) A toy consisting of vanes of colored paper or plastic that is pinned to a stick and spins when it is pointed into the wind

(3) A wheel that has numerous pins that are set at right angles to its rim

"He spun the pinwheel and it stopped with the pointer on `Go'"

(4) Perennial subshrub of Tenerife having leaves in rosettes resembling pinwheels