1. (n.) One who tamps; specifically, one who prepares for blasting, by filling the hole in which the charge is placed.

2. (n.) An instrument used in tamping; a tamping iron.

3. (v. i.) To meddle; to be busy; to try little experiments; as, to tamper with a disease.

4. (v. i.) To meddle so as to alter, injure, or vitiate a thing.

5. (v. i.) To deal unfairly; to practice secretly; to use bribery.