Sixth /(?)/

Sixth

a.
  1. First after the fifth; next in order after the fifth.
  2. Constituting or being one of six equal parts into which anything is divided.

Sixth

n.
  1. The quotient of a unit divided by six; one of six equal parts which form a whole.
  2. The next in order after the fifth.
  3. The interval embracing six diatonic degrees of the scale. (Mus.)