1a small soft creature, like a snail without a shell, that moves very slowly and often eats garden plants2(informal) a small amount of a strong alcoholic drinkHe took another slug of whisky.3(informal, especially North American English) a bullet4(North American English, informal) a piece of metal shaped like a coin used to get things from machines, etc, sometimes illegally
slʌɡ
slʌɡ