Crossword Genius

Lecturer gives this pain, to secure first in Italian (9)

Ross

I believe the answer is:

reprimand

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'lecturer gives this pain' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'to secure first in italian' is the wordplay.
'to secure' means one lot of letters goes inside another (inserted letters are secured inside).
'first' becomes 'prima' (I've seen this before).
'in italian' becomes 'rend' (I am not sure about this - if you are sure you should believe this answer much more).
'prima' inserted into 'rend' is 'REPRIMAND'.

Can you help me to learn more?

(Other definitions for reprimand that I've seen before include "Severe telling-off" , "Tick off - carpet" , "Formal rebuke" , "Severe reproof" , "Expression of disapproval" .)

I've seen this clue in The Guardian.
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