Begotten in an adulter-ous intercourse. In t^e. Roman, and canon law, adulterine bastards )vere distinguished from such as were the issue ot two unmar-ried persons, and the.fpruicr were treated with more severity, not being..allowed, the status of natural, children,,, and' being, in-eligible to holy orders
Source: Black's Law Dictionary 2nd Ed (1910)