She was Boaz’s wife? Pity (4)

I believe the answer is:

ruth

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'pity' is the definition.
(synonyms)

I cannot understand how the remainder of the clue works.

(Other definitions for ruth that I've seen before include "Lady" , "Babe -, US baseball player" , "Biblical Book with woman's name - a pity" , "She is followed by Samuel" , "she married Boaz!" .)

I've seen this clue in The Times.

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