Webster's Revised Unabridged Dictionary · 1913

Fifty

Fifty , adjective

[Anglo-Saxon fīftig; akin to Old High German finfzug, fimfzuc, German funfzig, funfzig, Gothic fimftigjus. See Five, and Ten, and compare Fifteen.]

Five times ten; as, fifty men.

Fifty ({not transcribed}) , noun

1.
The sum of five tens; fifty units or objects.
2.
A symbol representing fifty units, as 50, or l.