Slim connection between humanists scribbling out article (7)
I believe the answer is:
isthmus
'article' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for isthmus that I've seen before include "Narrow neck of land connecting two larger portions" , "Constriction" , "Such a narrow area" , "Narrow strip of land connecting two larger areas" , "Narrow stretch of land joining two larger masses" .)