Meaning

noun the right to enter

noun the right to obtain or make use of or take advantage of something (as services or membership)

noun a way of entering or leaving

originFrom Middle English accesse, acces, borrowed from Middle French acces (“attack, onslaught”) or from its source Latin accessus, perfect passive participle of accēdō (“approach; accede”), from ad (“to, toward, at”) + cēdō (“move, yield”). Doublet of accessus. First attested in the early 14th century. The sense "entrance" was first attested about 1380.

Etymology from Wiktionary, CC BY-SA 3.0