Perhaps trainee used TNT mistakenly (7)

I believe the answer is:

student

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'perhaps trainee' is the definition.
I can't tell whether this defines the answer.

'used tnt mistakenly' is the wordplay.
'mistakenly' is an anagram indicator.
'used'+'tnt'='usedtnt'
'usedtnt' anagrammed gives 'STUDENT'.

Can you help me to learn more?

(Other definitions for student that I've seen before include "Undergraduate maybe" , "Trainee" , "One in higher education" , "collegian" , "Eg, undergraduate" .)

I've seen this clue in The Irish Times.

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