Crossword Genius

Book taken by amazing brainiac student from a teacher (10)

Ross

I believe the answer is:

rabbinical

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'from a teacher' is the definition.
I can't tell whether this definition defines the answer.

'book taken by amazing brainiac student' is the wordplay.
'book' becomes 'b' (abbreviation for book).
'taken by' indicates putting letters inside.
'amazing' is an anagram indicator.
'student' becomes 'l' (as in L-plates for learner drivers).
'brainiac'+'l'='brainiacl'
'brainiacl' with letters rearranged gives 'rabinical'.
'b' going inside 'rabinical' is 'RABBINICAL'.

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I've seen this clue in The Telegraph.
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