What does according mean?
The definition of according
Ac*cord”ing, p. a.
Agreeing; in agreement or harmony; harmonious. “This according voice of national wisdom.” Burke. “Mind and soul according well.” Tennyson. According to him, every person was to be bought. Macaulay. Our zeal should be according to knowledge. Sprat.

Note: According to has been called a prepositional phrase, but strictly speaking, according is a participle in the sense of agreeing, acceding, and to alone is the preposition. According as, precisely as; the same as; corresponding to the way in which. According as is an adverbial phrase, of which the propriety has been doubted; but good usage sanctions it. See According, adv. Is all things well, According as I gave directions Shak. The land which the Lord will give you according as he hath promised. Ex. xii. 25. p. 13

Ac*cord”ing, adv.
Accordingly; correspondingly. [Obs.] Shak.