Crossword Genius

Island one wouldn't yield, if extremely resolute (4)

Ross

I believe the answer is:

inch

I believe this clue is a double definition.

'island' is the first definition.
(inch can mean a small island)

'one wouldn't yield if extremely resolute' is the second definition.
('don't give them an inch')

(Other definitions for inch that I've seen before include "Irish island" , "One of a 2 down in a foot" , "... or not so long < , Celtic island" , "Scottish island: unit of length" , "Move very slowly - a very short distance" .)

I've seen this clue in The Guardian.
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