Redirect gangs to be reformed as expression of friendship (9,4)
I believe the answer is:
greetings card
'expression of friendship' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'redirect gangs to be reformed' is the wordplay.
'to be reformed' is an anagram indicator.
'redirect'+'gangs'='redirectgangs'
'redirectgangs' anagrammed gives 'GREETINGS CARD'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for greetings card that I've seen before include "It's used for wishing well" , "Valentine, for instance" , "Means of salutation" , "way to convey birthday wishes?" , "item of Christmas post?" .)