1. [ adjective ] coming next after the fourth and just before the sixth in position
Synonyms: 5th
Related terms: ordinal
2. [ noun ] a quantity of liquor equal to one fifth of a United States gallon
Related terms: United_States_liquid_unit
3. [ noun ] position five in a countable series of things

"he was fifth out of several hundred runners"

Related terms: rank
4. [ noun ] (mathematics) a fifth part
Synonyms: one-fifth twenty_percent fifth_part
Related terms: common_fraction
5. [ noun ] (music) the musical interval between one note and another five notes away from it
Related terms: interval
Similar spelling:   fifty