Crossword Genius

Climate activist Brockovich (4)

Ross

I believe the answer is:

erin

(Other definitions for erin that I've seen before include "The Emerald Isle, in poetry" , "'Come back to ...' (emigrant song)" , "Ireland (poet.)" , "Let ... Remember (song)" , "Another name for 11 ac" .)

I've seen this clue in the Universal.
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