Top star with leg broken (7)
I believe the answer is:
largest
'top' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?
'star with leg broken' is the wordplay.
'with' means one lot of letters go next to another.
'broken' indicates an anagram.
'star' put after 'leg' is 'legstar'.
'legstar' is an anagram of 'LARGEST'.
Can you help me to learn more?
(Other definitions for largest that I've seen before include "Superlatively extensive" , "Maximum" , "Most substantial" , "most great" , "Most ample" .)