Definition of "slug" [slug]

• A round bullet larger than buckshot. (noun)
• Informal A shot of liquor. (noun)
• Informal An amount of liquid, especially liquor, that is swallowed in one gulp; a swig. (noun)
• A small metal disk for use in a vending or gambling machine, especially one used illegally. (noun)
• A lump of metal or glass prepared for further processing. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The crawling speed of a slug may also depend on air temperature and humidity, whether or not the slug is also grazing on the tree surface while crawling, its species and size and the slope as well as the microscopic characteristics of the surface."
• "This slug is then followed successively by varying quantities of Diesel Fuel, Kerosene, other intermediate products, ordinary grade Gasolene, high octane, premium and Aviation Gasolenes, each succeeding product pushing the others on ahead in the line."
• "In the thickest of my fight with the slugs some one said to me, Everything living has its enemy; the enemy of the slug is the toad."