"fifths" in the noun sense
1. fifth
a quantity of liquor equal to one fifth of a United States gallon
2. fifth
position five in a countable series of things
"he was fifth out of several hundred runners"
3. one-fifth, fifth, fifth part, twenty percent
one part in five equal parts
4. fifth
the musical interval between one note and another five notes away from it
Source: WordNet® (An amazing lexical database of English)
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