Writer of a note, throwing out broken nibs (5)

I believe the answer is:

ibsen

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'writer' is the definition.
(dramatist Henrik Ibsen)

I don't understand the rest of the clue.

(Other definitions for ibsen that I've seen before include "See 7 Down" , "Norse playwright" , "6 24 113 [SCAN-DIN-AVIAN] writer" , "Norwegian dramatist of 'Hedda Gabler'" , "'Doll's House' playwright" .)

I've seen this clue in the Evening Standard.

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