Webster's Revised Unabridged Dictionary · 1913

Source

Source , noun

[Old English sours, Old French sourse, surse, sorse, French source, from Old French sors, past participle of Old French sordre, surdre, sourdre, to spring forth or up, French sourdre, from Latin surgere to lift or raise up, to spring up. See Surge, and compare Souse to plunge or swoop as a bird upon its prey.]

1.
The act of rising; a rise; an ascent. [Obsolete]
Therefore right as an hawk upon a sours Up springeth into the air, right so prayers... Maken their sours to Goddes ears two. — Chaucer
2.
The rising from the ground, or beginning, of a stream of water or the like; a spring; a fountain.
Where as the Poo out of a welle small Taketh his firste springing and his sours. — Chaucer
Kings that rule Behind the hidden sources of the Nile. — Addison
3.
That from which anything comes forth, regarded as its cause or origin; the person from whom anything originates; first cause.
This source of ideas every man has wholly in himself. — Locke
The source of Newton's light, of Bacon's sense. — Pope