The Collaborative International Dictionary of English v.0.48:

Ballet \Bal"let`\ (b[a^]l"l[asl]` or b[a^]l"l[e^]t; 277), n.
   [F., a dim. of bal dance. See 2d Ball, n.]
   1. An artistic dance performed as a theatrical entertainment,
      or an interlude, by a number of persons, usually women.
      Sometimes, a scene accompanied by pantomime and dancing.
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   2. The company of persons who perform the ballet.
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   3. (Mus.) A light part song, or madrigal, with a fa la burden
      or chorus, -- most common with the Elizabethan madrigal
      composers; -- also spelled ballett.
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   4. (Her.) A bearing in coats of arms, representing one or
      more balls, which are denominated bezants, plates, etc.,
      according to color.
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