Crossword Genius

Kate Middleton, to Prince George (3)

Ross

I believe the answer is:

mum

(Other definitions for mum that I've seen before include "Tight-lipped" , "Parent (who's kept or is the word!)" , "Keep it secret from mother?" , "(Keep) silent; mother" , "Silent; parent" .)

I've seen this clue in the LA Times.
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