slug
noun
2.
a unit of mass equal to the mass that accelerates at 1 foot/sec/sec when acted upon by a force of 1 pound; approximately 14.5939 kilograms
3.
a counterfeit coin
5.
an amount of an alcoholic drink (usually liquor) that is poured or gulped
6.
a strip of type metal used for spacing
7.
any of various terrestrial gastropods having an elongated slimy body and no external shell