Claims no drunk can display brevity (8)

I believe the answer is:

laconism

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

'display brevity' is the definition.
'laconism' can be an answer for 'brevity' (thesaurus). I'm not sure about the 'display' bit.

'claims no drunk' is the wordplay.
'drunk' indicates an anagram.
'claims'+'no'='claimsno'
'claimsno' anagrammed gives 'LACONISM'.

'can' acts as a link.

Can you help me to learn more?

(Another definition for laconism that I've seen is " Brevity in speech or writing; is no clam (anag.)".)

I've seen this clue in The Independent.

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