Probably from G4078 (through the idea of gushing plumply); a fount (literally or {figuratively}) that {is} source or supply (of {water} {blood} {enjoyment}) (not necessarily the original spring): - {fountain} well.
Verse
Matrix
Luk 11:42But woe unto you, Pharisees! for ye tithe mint and rueG4076 and all manner of herbs, and pass over judgment and the love of God: these ought ye to have done, and not to leave the other undone.