Origin: 1780–90; < Ir síbín illicit whiskey, place where such whiskey is sold (ellipsis from teach síbín shebeen house), orig., a unit of measure < E chopin1
"cabin where unlicensed liquor is sold and drunk," c.1787, chiefly in Ireland and Scotland, from Ir. seibin "small mug," also "bad ale," dim. of seibe "mug, bottle, liquid measure."