Fair feature of an important pickpocket (3,6)
I believe the answer is:
big dipper
'fair feature' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'an important pickpocket' is the wordplay.
I cannot quite understand how this works, but
'an' could be 'per' (synonymous as in 'once an hour', 'once per hour') and 'per' is found within the answer.
'important' could be 'big' (similar in meaning) and 'big' is found within the answer.
'pickpocket' could be 'dip' (synonyms) and 'dip' is found in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
'of' is the link.
Can you help me to learn more?
(Other definitions for big dipper that I've seen before include "Fairground ride" , "Stars in America" , "Familiar US stars" , "switchback" , "Amusement park attraction" .)