From The Collaborative International Dictionary of English v.0.48:
Defect \De*fect"\, v. t. To injure; to damage. "None can my life defect." [R.] --Troubles of Q. Elizabeth (1639). [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Defect \De*fect"\, n. [L. defectus, fr. deficere, defectum, to desert, fail, be wanting; de- + facere to make, do. See Fact, Feat, and cf. Deficit.] 1. Want or absence of something necessary for completeness or perfection; deficiency; -- opposed to superfluity. [1913 Webster]
Errors have been corrected, and defects supplied. --Davies. [1913 Webster]
2. Failing; fault; imperfection, whether physical or moral; blemish; as, a defect in the ear or eye; a defect in timber or iron; a defect of memory or judgment. [1913 Webster]
Trust not yourself; but, your defects to know, Make use of every friend -- and every foe. --Pope. [1913 Webster]
Among boys little tenderness is shown to personal defects. --Macaulay.
Syn: Deficiency; imperfection; blemish. See Fault. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Defect \De*fect"\, v. i. To fail; to become deficient. [Obs.] "Defected honor." --Warner. [1913 Webster]
2. to abandon one country or faction, and join another. [PJC]