Snug has more than one meaning. One is a rugged projection, a meaning which has, perhaps, disappeared. Another is a safe, comfortable place. Snuggery means the same thing. Snug used to be a verb, now surviving as snuggle. Snug is dialect for a bar parlor. To snug is to put things in order on a ship. A cozy gathering place is the meaning behind Mudcat snug, (e. g. a bar ?). In Ireland the term may have other meanings, such as the one found by Joe. I haven't heard the term in Canada for a bar, but it may exist on the east coast.