P. W. Joyce,
English As We Speak It in Ireland
“ Slug; a drink: as a verb, to drink:—'Here take a little slug from this and 'twill do you good.' Irish slog to swallow by drinking. (General.) Whence slugga and sluggera, a cavity in a river-bed into which the water is slugged or swallowed.Slugabed; a sluggard. (General in Limerick.) Old English, obsolete in England:—'Fie, you slug-a-bed.' ('Romeo and Juliet.') Slush; to work and toil like a slave: a woman who toils hard. (General.) Slut; a torch made by dipping a long wick in resin. (Armagh.) Called a paudheoge in Munster. ”
