Eke out during the time in captivity (7)

I believe the answer is:

stretch

I'm a little stuck... Click here to teach me more about this clue!

'time in captivity' is the definition.
'stretch' can be an answer for 'time' (I've seen this before). I'm not sure about the 'in captivity' bit.

I can't explain the rest of the clue.

Can you help me to learn more?

(Other definitions for stretch that I've seen before include "Extend, elongate" , "that one may do to a point" , "Extend, time spent in prison" , "time spent in jail" , "Make (something) longer" .)

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.