source

n. origin; starting point; source code (Computers)

v. originate from; reveal the origin of something; obtain from a particular supplier

Source may refer to:ResearchSource text, in research (especially in the humanities), a source of information referred to by citationPrimary source, firsthand written evidence of history made at the time of the event by someone who was presentSecondary source, written accounts of history based upon the evidence from primary sourcesTertiary source, compilations based upon primary and secondary sources
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n. spring, source, fountain; well, fountainhead

(n.)
The rising from the ground, or beginning, of a stream of water or the like; a spring; a fountain.
  

(n.)
The act of rising; a rise; an ascent.
  

(n.)
That from which anything comes forth, regarded as its cause or origin; the person from whom anything originates; first cause.
  

In communications, that part of a system from which messages are considered to originate. (188 )