subs. phr. (Scots’).—See quot.
1808. JAMIESON, An Etymological Dictionary of the Scottish Language, s.v. A cant phrase formerly denoting a joint or leg of mutton, ordered for a club of citizens who used to meet in one of the closes leading down to the North loch. The invitation was given in these terms: Will ye gang and eat a NOR LOCH TROUT? The reason of the name is obvious. This was the only species of fish which the North Loch, on which the shambles were situated, could supply.
