What is the meaning of Fifth?

The ordinal form of the number five.

The person or thing in the fifth position.

One of five equal parts of a whole.

The fifth gear of an engine.

A quantity of liquor equal to one-fifth of an American gallon, or, more commonly, 750 milliliters (that is, three quarters of a liter).

The musical interval between one note and another five scale degrees higher (the fifth note in a scale)

The fifth voice in a polyphonic melody.

To sing in the fifth voice in a polyphonic melody.

To support something fifth, after four others have already done so.

To divide by five.

Source: wiktionary.org