context: In English it is the most common way to refer to years as "AD" (which is equivalent to the use of BK) or "BC" ie "before Christ" (cf. BC); it is also common in historical texts that use Latin.
question: What is the meaning of BK?
answers.text: the most common way to refer to years as "AD" (which is equivalent to the use of BK) or "BC" ie "before Christ