Sentence:  Rain of near cloudburst proportions had fallen for three full days and it was still raining on the morning of Friday , November 4 , 1927 , when officials of the Post Office Department 's Railway Mail Service realized that their distribution system for Vermont had been almost totally <WSD>destroyed</WSD> overnight . 
Meaning of the word marked with <WSD> tags:  do away with, cause the destruction or undoing of