Dictionary

A person or thing that tamps.

A tool used to tamp something down, such as tobacco in a pipe.

A railway vehicle used to tamp down ballast.

An envelope of neutron-reflecting material in a nuclear weapon, used to delay the expansion of the reacting material and thus produce a longer-lasting and more energetic explosion.

To make unauthorized or improper alterations, sometimes causing deliberate damage; to meddle (with something).

Example: The alarm had been tampered with and didn’t go off when it should have.

To try to influence someone, usually in an illegal or devious way; to try to deal (with someone).

Example: Prosecutors argued that he would tamper with witnesses if bail was granted.

To meddle (with something) in order to corrupt or pervert it.

To involve oneself (in a plot, scheme, etc.).