"sixth" in the noun sense
1. sixth
position six in a countable series of things
2. one-sixth, sixth
one part in six equal parts
3. sixth
the musical interval between one note and another six notes away from it
"sixth" in the adjective sense
1. sixth, 6th
coming next after the fifth and just before the seventh in position
Source: WordNet® (An amazing lexical database of English)
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