(from the article `bullfighting`) ...the mounted assistants with pike poles who lance the bull in the bullfight`s first act; the banderilleros, the assistants on foot who execute the ... ...feats of horsemanship while placing first the rejones de castigo (`punishing rejones`) and then the banderillas (barbed darts) in the shou... Found on http://www.britannica.com/eb/a-z/b/15
Ban`de·ril'la noun [ Spanish , dim. of bandera banner. See Banner , and confer Banderole .] A barbed dart carrying a banderole which the banderillero thrusts into the neck or shoulder of the bull in a bullfight. Found on http://www.encyclo.co.uk/webster/B/10