More than one ghost writer (5)

I believe the answer is:

ibsen

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

I can't explain the remainder of the clue.

(Other definitions for ibsen that I've seen before include "Linesman" , "See 7 Down" , "Norwegian playwright (Peer Gynt)" , "6 24 113 [SCAN-DIN-AVIAN] writer" , "Norwegian author of 'Peer Gynt' etc" .)

I've seen this clue in The Globe and Mail.

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