noun, verb, slugged, slug⋅ging.| 1. | any of various snaillike terrestrial gastropods having no shell or only a rudimentary one, feeding on plants and a pest of leafy garden crops. |
| 2. | a nudibranch. |
| 3. | a metal disk used as a coin or token, generally counterfeit. |
| 4. | a piece of lead or other metal for firing from a gun. |
| 5. | any heavy piece of crude metal. |
| 6. | Printing.
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| 7. | Informal. a shot of liquor taken neat; belt. |
| 8. | Slang. a person who is lazy or slow-moving; sluggard. |
| 9. | a slow-moving animal, vehicle, or the like. |
| 10. | Journalism.
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| 11. | Metalworking. a small piece of metal ready for processing. |
| 12. | a gold coin of California, privately issued in 1849 and for some time after, worth 50 dollars. |
| 13. | Physics. a unit of mass, equivalent to approximately 32.2 lb. (15 kg) and having the property that a force of one pound acting upon a mass of this unit produces an acceleration of one foot per second per second. |
| 14. | an irregular projection or knob on the surface of yarn, usually produced by lint or by defects in weaving. |
| 15. | Printing.
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| 16. | Journalism. to furnish (copy) with a slug. |
| 17. | to interpolate pieces of metal into (a joint being welded). |

verb, slugged, slug⋅ging, noun Informal.| 1. | to strike heavily; hit hard, esp. with the fist. |
| 2. | to hit or drive (a baseball) very hard or a great distance. |
| 3. | to hit or be capable of hitting hard. |
| 4. | to trudge, fight, or push onward, as against obstacles or through mud or snow: The infantry slugged up the hill and dug in. |
| 5. | a hard blow or hit, esp. with a fist or baseball bat. |
| 6. | slug it out,
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