Reference in city road construction (10)
I believe the answer is:
dictionary
'reference' is the definition.
(dictionary is a kind of reference)
'in city road construction' is the wordplay.
'construction' is an anagram indicator (answer constructed from certain letters).
'in'+'city'+'road'='incityroad'
'incityroad' is an anagram of 'DICTIONARY'.
(Other definitions for dictionary that I've seen before include "Work full of meaning" , "Brewer's creation, say" , "Ordered book" , "glossary" , "Lexicon" .)