pinwheel

Short definition from Wiktionary

Noun

1. 1
   An artificial flower with a stem, usually plastic, for children: the flower spins round in the wind, like a small paper windmill.
2. 2
   A firework which forms a kind of spinning wheel.
3. 3
   A cogged (toothed) gear.
4. 4
   A pastry which resembles the artificial flowers above, with some filling or topping in the center.
5. 5
   Any food product consisting of layers (for example of pastry and sweet filling, or of bread and meat) rolled into a spiral, visually similar to a cinnamon roll.

Verb

1. 1
   To spin.