The operation of sinking or digging wells; the act of boring for water.(noun)
The Century Dictionary (Public Domain)
Use "well-sinking" in a sentence
"Technical factors include a dry-season watertable within the suction limit, a suitable aquifer at depth reachable by low-cost well-sinking methods, and sufficient recharge."
"It was, as one might imagine, the strangest experience of my very varied life which has included well-sinking in every continent upon earth."
"They did all kinds of men's work by preference, including well-sinking, hedging, ditching, and excavating, without any sense of fatigue."