1. Coming next after the fifth and just before the seventh in position
   - 6th

1. Position six in a countable series of things
   "He was sixth in line for the throne"
    
2. One part in six equal parts
   "One-sixth of the pie remained uneaten";
   - one-sixth
    
3. The musical interval between one note and another six notes away from it
   "The harmony included a major sixth between the alto and soprano parts"

Derived forms: sixths

See also: ordinal

Type of: common fraction, interval, musical interval, rank, simple fraction, vulgar fraction [Brit]

Encyclopedia: Sixth