Merriam-Webster's Collegiate® Dictionary, 11th Edition
DARN
I. verb
Etymology: perhaps from French dialect darner
Date: circa 1600
transitive verb to mend with interlacing stitches, to embroider by filling in with long running or interlacing stitches, intransitive verb to do darning, darner noun
II. noun
Date: 1720
a place that has been darned ,
III. adjective or adverb also durn
Etymology: euphemism
Date: 1781
damned ,
IV. verb also durn
Date: 1781
damn , darned also durned adjective or adverb
V. noun also durn
Date: 1840
damn