A rig, consisting of platform and machinery, used to drill for oil and other petroleum products like natural gas.
A railway vehicle used to tamp down ballast.
A tool used to tamp something down, such as tobacco in a pipe.
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.
A person or thing that tamps.
To make unauthorized or improper alterations, sometimes causing deliberate damage; to meddle (with something).
To try to influence someone, usually in an illegal or devious way; to try to deal (with someone).
To discuss future contracts with a player, against league rules.