Definition of tamper

• n. - One who tamps; specifically, one who prepares for blasting, by filling the hole in which the charge is placed.
• n. - An instrument used in tamping; a tamping iron.
• v. i. - To meddle; to be busy; to try little experiments; as, to tamper with a disease.
• v. i. - To meddle so as to alter, injure, or vitiate a thing.
• v. i. - To deal unfairly; to practice secretly; to use bribery.