the starting point (of a river); a place or person from which something comes or is got; original documents etc for an academic study
beginning; point of supply
Cases of word usage
1) having the same source or origin as something (cognate)
2) secondary or subordinate but from the same source (collateral)
3) to come, flow, proceed, (from a source or origin) (emanate)
4) an apparatus producing a rush of water into the air; a source or origin (fountain)
5) a form of noun etc showing source or possession, as in 'Australia's trees' (genitive)