pinwheel /ˈpɪnˌwiːl/noun 5verb 1forms 3 noun5 •A toy for children, comprising an artificial (usually plastic) stem and a flower that spins round in the wind like a tiny windmill. •A pastry made by laying out dough flat, smearing a topping over it and rolling it up into a spiral, then baking it, resulting in a swirl of filling. •Any food product consisting of layers (for example of pastry and sweet filling, or of bread and meat) rolled into a spiral. •(US, Canada) A firework that spins in the shape of a spinning wheel.The sun blazing late in the afternoon, this long hilarious day like a pinwheel inexhaustibly throwing off sparks. — 1992 •A cogged (toothed) gear. verb1 •To spin.The damaged fighter jet pinwheeled out of control, the g-forces pushing the pilot so hard he couldn't reach the ejection switch. formspinwheeled · pinwheeling · pinwheels