Fragments taken from street of a trailer (9)
I believe the answer is:
foretaste
'trailer' is the definition.
(I've seen this before)
'fragments taken from street of a' is the wordplay.
'fragments' becomes 'f' (this might be a standard abbreviation I've not previously seen).
'taken from' indicates an anagram.
'of' becomes 'o''.
'street'+'o'+'a'='streetoa'
'streetoa' is an anagram of 'oretaste'.
'f'+'oretaste'='FORETASTE'
Can you help me to learn more?
(Other definitions for foretaste that I've seen before include "Brief experience of what is to come" , "Sampler" , "Sample of what's ahead" , "Appetiser" , "Preview" .)