A boots was a (usually very junior) servant whose particular task was the cleaning and polishing of boots and shoes.
Boot can also be used as a verb, meaning "to kick", or as part of the phrase "to give somebody the boot", meaning to forcibly eject somebody from a room or institution.
In computing, booting is the process of starting up a computer.
This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.