Crossword Genius

One of the bones that protects the lungs (3)

Ross

I believe the answer is:

rib

(Other definitions for rib that I've seen before include "Tease good-naturedly" , "Eve is knownj as Adam's . . ." , "Tease; pectoral bone" , "Part of vault" , "structural member" .)

I've seen this clue in the Sydney Morning Herald.
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