= ನಡುನೀರು.

the central portion of a water tank, pond, etc. where the depth is more.

the horizontally central portion of a river.

(fig.) a difficult and helpless situation.

ನಡುನೀರಿನಲ್ಲಿ ಕೈಬಿಡು naḍu nīrinalli kai biḍu (fig.) to abandon a person while he or she is in great difficulty or helpless situation.