Thank you oded for trying to find out if there is a gap.
I concur with others on the thrill one feels when one's search leads one to the answer.
What would help me most is a English-Scottish dictionary. I reside outside UK where no Scottish words are used.
There may be a dictionary out there but I am not aware of it.
I do go to glosbe,com but most of the time the word the setter has used is not in it.
By using some of the tools mentioned by seamus and the Chambers crossword dictionary, I have managed.
It would not be productive for you to come up with one for a few solvers like me who have to spend some extra time to find the answer.