here are a few salient senses of the word from a pre-dragon dictionary : 1 ) based on the innate moral sense , instinctive ; 2 ) constituted by nature , as in a natural year ; 3 ) normal , conformable to the ordinary course of nature ; 4 ) physically existing , not spiritual ; 5 ) not artificial ; 6 ) destined to be such by nature , as in natural enemies ; 7 ) not enlightened or communicating by revelation .