Definitions
1.NounThe person, place, or thing from which something (information, goods, etc.) comes or is acquired."The accused refused to reveal the source of the illegal drugs she was selling."
2.NounSpring; fountainhead; wellhead; any collection of water on or under the surface of the ground in which a stream originates."The main sources of the Euphrates River are the Karasu and Murat Rivers."
3.NounA reporter's informant.
4.NounSource code.
5.NounThe name of one terminal of a field effect transistor (FET).
6.NounA node in a directed graph whose edges all go out from it; one with no entering edges.
7.NounThe domain of a function; the object which a morphism points from.
8.VerbTo obtain or procure: used especially of a business resource.
9.VerbTo find information about (a quotation)'s source (from which it comes): to find a citation for.