It is further the intent of this article to confer upon the Zoning Board of Adjustment as full and complete powers as may lawfully be conferred upon such Board, including, not by way of limitation, the authority, in connection with any case, action or proceeding before the Board, to interpret and construe the provisions of this article, or any term, clause, sentence or word hereof, and the Zoning Map, in accordance with the general rules of construction, applicable to legislative enactments.