Read the dictionary definition of slug. All definitions for this word.
1. (boxing) a blow with the fist
1. 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
1. 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
9. strike heavily, especially with the fist or a bat
1. He slugged me so hard that I passed out
10. be idle; exist in a changeless situation
1. The old man sat and stagnated on his porch
2. He slugged in bed all morning