"Well, well!" (3)
'well' is the definition.
(a well is a spring of water)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for spring that I've seen before include "rise" , "beginning" , "Flowering season of 7 dn" , "Leap, vault" , "May, perhaps - bound" .)
(Other definitions for oho that I've seen before include "I see!" , "Expression of surprise" , "Triumphant cry" .)