·noun One who, or that which, rams or drives.
II. Rammer ·noun A rod for forcing down the charge of a gun; a ramrod.
III. Rammer ·noun An implement for pounding the sand of a mold to render it compact.
IV. Rammer ·noun An instrument for driving anything with force; as, a rammer for driving stones or piles, or for beating the earth to more solidity.