Ram"mer (?), n.
One who, or that which, rams or drives.
Specifically: (a)
An instrument for driving anything force; as, a rammer for driving stones or piles, or for beating the earth to more solidity
. (b)
A rod for forcing down the charge of a gun; a ramrod
. (c) Founding
An implement for pounding the sand of a mold to render it compact.
© Webster 1913.