No.
Edinburgh Castle is not called Mons Meg. Mons Meg is the name of a huge historic cannon at Edinburgh Castle.
There is no old volcano in Edinburgh (there was igneous activity 350 million years ago, and there are several volcanic plugs), and Auld Reekie is a nickname for the city of Edinburgh itself.
No. Auld Reekie is an affectionate name for the city of Edinburgh. There was igneous activity there 350 million years ago, which has left various volcanic plugs, but Edinburgh has no extinct volcano.
Auld Reekie Roller Girls was created in 2008-04.
Auld Reekie
"Auld Reekie" is a nick name for Edinburgh and means "Old Smokey."
Auld Reekie, or Old Smoky, is an affectionate term for Edinburgh, the capital of Scotland.
Edinburgh
I believe that it was "Dane Law" for a while. Could also have been "Tax Land" from Danish Skat (Tax) + land (Skatland).
Castle Rock, on which Edinburgh Castle is built, is the eroded remnant of the basalt plug of an unnamed, extinct volcano. Arthur's Seat, about a mile away, is the main peak of a group of volcanic hills of the same age and composition as Castle Rock. Features on Arthur's Seat suggest that there were multiple volcanic vents in the area 350 million years ago. Subsequent glacial erosion has left the isolated features seen today.
Translated it means "Old Smoky". A reference to the smoke caused by industrialisation. Answer Reek in Scots is smoke in this case. It can also mean smell. Auld Reekie means Old Smoky because of the smoke from the chimneys of the tenements and close packed houses. The Clean Air Act sorted that problem out.
You may be thinking of the nickname for Edinburgh, 'Auld Reekie' meaning Old Smelly. If something is 'reeking' it is stinking or very smelly, pungent.
The Gaelic name for Edinburgh is Dun Eideann - Dunedin in New Zealand is named after it. Edinburgh's nickname was Auld Reekie (Old Smokey).
Auld Reekie, which means Old Smoky in Scottish. This is because in olden days when other means of modern fuel was unavailable, chimneys would give lots of smoke.