One who, or that which, slams.
(slang, usually "the slammer") jail, prison.
A tequila cocktail that is slammed onto a surface to induce fizzing.
One who takes part in slam-dance.
One who competes in a poetry slam.
In the game of Pogs, the heavier piece used to strike the stack of counters.
(UK, slang) A slam-door train.