a. [ Cf. F. défectueux. ] Full of defects; imperfect. [ Obs. ] Barrow. [ 1913 Webster ]

n. [ L. defectio: cf. F. défection. See Defect. ] Act of abandoning a person or cause to which one is bound by allegiance or duty, or to which one has attached himself; desertion; failure in duty; a falling away; apostasy; backsliding. “Defection and falling away from God.” Sir W. Raleigh. [ 1913 Webster ]

The general defection of the whole realm. Sir J. Davies. [ 1913 Webster ]

n. One who advocates or encourages defection. [ 1913 Webster ]