Crossword Genius

Able to come back after a stretch (7)

Ross

I believe the answer is:

elastic

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'stretch' is the definition.
(similar in meaning)

I cannot understand how the remainder of the clue works.

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(Other definitions for elastic that I've seen before include "Flexible, adaptable" , "Like some bands" , "Fluid" , "Flexible (material)" , "Scale it (anag.)" .)

I've seen this clue in The Irish News.
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