Brusque master selects interns (5)

I believe the answer is:

terse

I'm a little stuck... Click here to teach me more about this clue!

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

'master selects interns' is the wordplay.
'TERSE' is hidden within the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for terse that I've seen before include "Curtly brief" , "Pithy among trees" , "Brusque, concise" , "Curt - abrupt" , "precise" .)

I've seen this clue in The Irish Times.

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