Stone etc hardly rocky in Glasgow region (11)
I believe the answer is:
strathclyde
'glasgow region' is the definition.
The definition suggests a singular noun which matches the answer.
'stone etc hardly rocky' is the wordplay.
'stone' becomes 'st' (abbreviation).
'rocky' indicates an anagram (letters rocked or thrown around).
'etc'+'hardly'='etchardly'
'etchardly' anagrammed gives 'rathclyde'.
'st'+'rathclyde'='STRATHCLYDE'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for strathclyde that I've seen before include "Scottish region and university" , "Region of Scotland around Glasgow" , "Area around Glasgow" .)