Crossword Genius

Picked up suss fling in Dublin? (5)

Ross

I believe the answer is:

craic

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'picked' is the definition.
The answer and definition are different parts of speech. However, past participle verbs and adjectives can sometimes define each other.

I cannot understand how the remainder of the clue works.

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(Other definitions for craic that I've seen before include "In Irish bars you'll get this" , "good time" , "Irish pub fun?" .)

I've seen this clue in the Sydney Morning Herald.
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