Fine food shop with choice bit of old (8)
I believe the answer is:
delicate
'fine' is the definition.
(similar in meaning)
'food shop with choice bit of old' is the wordplay.
'food shop' becomes 'deli' (synonyms).
'with choice bit of old' becomes 'cate' (I am not sure about this - if you are sure you should believe this answer much more).
'deli'+'cate'='DELICATE'
Can you help me to learn more?
(Other definitions for delicate that I've seen before include "Not robust" , "Very finely textured" , "Dainty - fragile" , "Exquistley fine or easily damaged" , "ticklish!" .)