Crossword Genius

Finally dig in (5)

Ross

I believe the answer is:

inter

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'in' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for inter that I've seen before include "Bury (or, perhaps, Milan)" , "get put down!" , "Prefix meaning between or among" , "foreign team" , "promoting cessation" .)

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