source

(noun): The person, place or thing from which something (information, goods, etc.) comes or is acquired.
(noun): Spring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which a stream originates.
(noun): A reporter's informant.
(noun): Source code.
(noun): The name of one terminal of a field effect transistor (FET).
(verb): To obtain or procure: used especially of a business resource.
(verb): To find information about (a quotation)'s source (from which it comes): to find a citation for.