Every country inn has a Scottish one (3)
I believe the answer is:
yin
'a scottish one' is the definition.
The definition suggests a singular noun which matches the answer.
'every country inn has' is the wordplay.
'has' indicates the answer is hidden within the clue.
'YIN' is hidden in the letters of 'every country inn'.
Can you help me to learn more?
(Other definitions for yin that I've seen before include "Chinese female passive principle of universe" , "Yang's counterpart" , "Counterpart of yang" , "Comedian Billy Connolly is the big one" , "principle accepted in China" .)