#1 flaw n. [defect, fault] an imperfection in an object or machine; "a flaw caused the crystal to shatter"; "if there are any defects you should send it back to the manufacturer". wn
#2 flaw v. [blemish] add a flaw or blemish to; make imperfect or defective. wn
#3 flaw n. defect or weakness in a person's character; "he had his flaws, but he was great nonetheless". wn
#4 flaw n. an imperfection in a plan or theory or legal document that causes it to fail or that reduces its effectiveness. wn
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