Calle de Cabeza Grande
Takes its name from a feature of the land: in Castilian toponymy a “cabeza” is the rounded summit of a hill, and “grande” marks its size.
A “cabeza,” in the speech of the Castilian highlands, names the rounded, swelling summit of a hill, the highest part that rises above the slopes. The image is direct: the peak seen as a head jutting out from the body of the sierra. From that usage come dozens of place names across the peninsula, and to it the name of this street in the Ciudad Jardín neighbourhood refers. “Grande” distinguishes the bulkiest summit among those that share a spot.
In the Sierra de Guadarrama, on the Segovian side, there is a hill called Cabeza Grande that commands the approaches to Segovia from the south. The reason the Madrid street register chose this name for the road is unknown.