Next after the fourth: an ordinal numeral.
noun.
The quotient of unity divided by five; one of five equal parts of anything: as, one fifth (⅕) of an acre.
noun.
In music: A tone five diatonic degrees above or below any given tone.
noun.
The interval between any tone and a tone five degrees distant from it.
noun.
The combination of two tones distant by a fifth.
noun.
In a scale, the fifth tone from the bottom; the dominant: solmizated sol, as G in the scale of C, or E in that of A.
noun.
In early English law, a fifth part of the rents of the year, or of movables, or both, granted or levied by way of tax.