Crossword Genius

Something to eat with top boffin (7)

Ross

I believe the answer is:

egghead

'boffin' is the definition.
(I've seen this before)

'something to eat with top' is the wordplay.
'something to eat' becomes 'egg' (egg is a kind of food**).
'with' means one lot of letters go next to another.
'top' becomes 'head' (head is a kind of top).
'egg'+'head'='EGGHEAD'

(Other definitions for egghead that I've seen before include "Informal intellectual of ovoid type" , "Boffin" , "Ovoid-shaped intellectual" , "Brainbox" , "providing access to soldiers" .)

I've seen this clue in The Telegraph.
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