To mend by filling in yarn or thread with a needle.
A place mended by darning.
A darn sight more than many a man with his woman." – Star-Dust A Story of an American Girl by Fannie Hurst
Because she told me so over the telephone, if you give a darn! – Angela's Business by Henry Sydnor Harrison
Darn, says I, if I'll go to Frisco broke. – The Ice Pilot by Henry Leverage