Learn how to say Slug correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word slug:
1a tough-skinned terrestrial mollusc which typically lacks a shell and secretes a film of mucus for protection. It can be a serious plant pest.
Order Stylommatophora, class Gastropoda
2a slow, lazy person.
3an amount of alcoholic drink that is gulped or poured:
he took a slug of whisky
4an elongated, typically rounded piece of metal:
the reactor uses embedded slugs of uranium
chiefly North American a bullet, especially a lead one.
a missile for an airgun.
5a line of type in Linotype printing.
verb (slugs, slugging, slugged)
drink (something, typically alcohol) in a large draught; swig:
she picked up her drink and slugged it straight back
late Middle English (in the sense ‘sluggard’): probably of Scandinavian origin; compare with Norwegian dialect slugg ‘large heavy body’. Sense 1 dates from the early 18th century