To interfere improperly or in violation of the law such as to tamper with a document The term "jury tampering" means to illegally disrupt the independence of a jury member with a view to influencing that juror otherwise than by the production of evidence in open court
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"
If someone tampers with something, they interfere with it or try to change it when they have no right to do so. I don't want to be accused of tampering with the evidence. tamper with to touch something or make changes to it without permission, especially in order to deliberately damage it
An instrument for pressing down tobacco in a pipe bowl, especially when a pipe is being re-lit, and the tobacco is too hot for comfortable finger tamping Formerly called a stopple Early stopples were usually clay Modern tampers are usually metal