Meaning of tamper

(noun) a tool for tamping (e.g., for tamping tobacco into a pipe bowl or a charge into a drill hole etc.)

(verb) play around with or alter or falsify, usually secretively or dishonestly; "Someone tampered with the documents on my desk"; "The reporter fiddle with the facts"

intrude in other people's affairs or business; interfere unwantedly; "Don't meddle in my affairs!"