The biggest of all, try to capture (7)
I believe the answer is:
tallest
'the biggest' is the definition.
I can't tell whether this definition defines the answer.
'all try to capture' is the wordplay.
'try' becomes 'test' (test is a kind of try).
'to capture' indicates putting letters inside.
'all' placed inside 'test' is 'TALLEST'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for tallest that I've seen before include "highest standing" , "Of greatest height" , "most unlikely" , "Highest in stature" , "Most lofty" .)