Sheep kills time in an easterly wind (9)
I believe the answer is:
leicester
'sheep' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'kills time in an easterly wind' is the wordplay.
'kills' becomes 'ices' (slang term).
'time' becomes 't' (abbreviation).
'in' is an insertion indicator.
'an easterly' says the letters should be written in reverse (the word seen from the right or \'east\').
'wind' becomes 'reel' (to reel something is to wind it up).
'reel' back-to-front is 'leer'.
'ices'+'t'='icest'
'icest' inserted into 'leer' is 'LEICESTER'.
Can you help me to learn more?
(Other definitions for leicester that I've seen before include "At Richmond Palace a favourite" , "Cheese; town" , "English cheese, maybe red" , "Orange kind of cheese" , "Sheep - cheese" .)