Aim to block attempt to get in (6)
I believe the answer is:
trendy
'in' is the definition.
Both the definition and answer are adjectives. Maybe you can see a link between them that I don't see?
'aim to block attempt' is the wordplay.
'aim' becomes 'end' (both can mean a goal or purpose).
'to block' indicates putting letters inside (block can mean to fill a hole in something).
'attempt' becomes 'try' (synonyms).
'end' placed inside 'try' is 'TRENDY'.
'to get' is the link.
Can you help me to learn more?
(Other definitions for trendy that I've seen before include "With-it" , "Stylish" , "Up to date, fashionable" , "Cool" , "In vogue" .)