First man infiltrating a group of spies after Bond's boss is hard nut to crack (9)
I believe the answer is:
macadamia
'hard nut to crack' is the definition.
I can't judge whether this defines the answer.
'first man infiltrating a group of spies after bond's boss' is the wordplay.
'first man' becomes 'adam' (first man in the Bible).
'infiltrating' is an insertion indicator.
'group of spies' becomes 'CIA' (Central Intelligence Agency).
'after' means one lot of letters go next to another.
'bond's boss' becomes 'm' (M is the head of MI6 in the James Bond series).
'a'+'cia'='acia'
'adam' placed into 'acia' is 'acadamia'.
'acadamia' after 'm' is 'MACADAMIA'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for macadamia that I've seen before include "(Of drug) causing dependency" , "Queensland nut" , "Edible nut" , "nut-tree" , "Australian tree with edible nuts - a CIA madam (anag)" .)