Crossword Genius

Northern Irish county in which Larne, Ballymena and Carrickfergus are situated (6)

Ross

I believe the answer is:

antrim

(Other definitions for antrim that I've seen before include "NI county" , "County in Ireland's north-east" , "Giant's Causeway county" , "18 down in Ulster" , "Irish county of musically green glens" .)

I've seen this clue in The Times.
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