Bulge in a trunk (4)

I believe the answer is:

knar

'bulge in a trunk' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for knar that I've seen before include "The knotty problem" , "Something sticking out of trunk" , "Knot in wood" .)

I've seen this clue in the Newsday.com and the Newsday.

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