NOUN (3)

1. music written in the rhythm of the bolero dance;

2. a short jacket; worn mostly by women;

3. a Spanish dance in triple time accompanied by guitar and castanets;

The Collaborative International Dictionary of English v.0.48:

Bolero \Bo*le"ro\, n. [Sp.] (Mus.)
   1. A Spanish dance, or the lively music which accompanies it.
      [1913 Webster]

   2. A kind of small outer jacket, with or without sleeves,
      worn by women.
      [Webster 1913 Suppl.]