Source: Britannica,
http://www.britannica.com/EBchecked/topic/...%20Encyclopedia
...bull’s shoulder blades. Costillares’s rival was Pedro Romero of Ronda in Andalusia,
who reputedly killed 5,600 bulls during a 28-year career and popularized use of the estoque,
the sword still used in the kill, and the muleta, the small red flannel cloth draped over a 22-inch (56-cm)
stick that forms the small cape used in the bullfight’s final act....