1. To obtain information or data; especially, from computer: "A person usually can't access most of the data on a computer without having a password."
2. To go someplace and to be able to enter whatever it is: "Pete asked for a key to the office because he was planning to access the office after working hours to complete his report.
3. Entering, making an entrée: "The thief was accessing the vault while the political rallies were taking place."