Crossword Genius

Sibling from South Island (3)

Ross

I believe the answer is:

sis

'sibling' is the definition.
(short for sister)

'south island' is the wordplay.
'south' becomes 's' (abbreviation).
'island' becomes 'is' (geographical abbreviation).
's'+'is'='SIS'

'from' acts as a link.

(Other definitions for sis that I've seen before include "Family member (informal)" , "Secret Intelligence Service (abbr.)" , "Secret Intelligence Service (abbreviation)" , "Girl" , "spies ..." .)

I've seen this clue in the Evening Standard.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.