källa

Etymology
From, from.

Noun

 * 1) a source (of information, or other things)
 * 2) a spring (where groundwater naturally emerges)
 * 3) a well (with some other liquid or gas)
 * 4) a source (of a river)
 * 5)  a source; a point where the divergence of a vector field is positive
 * 1) a well (with some other liquid or gas)
 * 2) a source (of a river)
 * 3)  a source; a point where the divergence of a vector field is positive
 * 1)  a source; a point where the divergence of a vector field is positive
 * 1)  a source; a point where the divergence of a vector field is positive

Usage notes
The spring/well sense in the original one, but källa is most commonly used as the generic word for source, hence why that sense is listed first.