slug

noun

1
(boxing) a blow with the fist
I gave him a clout on his nose
2
any of various terrestrial gastropods having an elongated slimy body and no external shell
3
a projectile that is fired from a gun
4
a strip of type metal used for spacing
5
an amount of an alcoholic drink (usually liquor) that is poured or gulped
he took a slug of hard liquor
6
an idle slothful person
7
a counterfeit coin
8
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

1
strike heavily, especially with the fist or a bat
He slugged me so hard that I passed out
2
be idle; exist in a changeless situation
The old man sat and stagnated on his porch
He slugged in bed all morning

Also useful for “slug”:Unscrambler— Turn loose letters into real words