What does the word trio mean?

Usage examples for trio

  1. It soon became evident that she favored two, at least, out of all this little masculine world- the Major myself; and a strange trio we made. – Peter Ibbetson by George Du Maurier
  2. It's an odd trio. – The Flying Stingaree by Harold Leland Goodwin
  3. They listened with the most intense interest, and the trio were as solemn as though they had met to consider the dangerous illness of the absent member of the family. – Taken by the Enemy by Oliver Optic