Stretch concluding segments of tall stories (7)
I believe the answer is:
legends
'stories' is the definition.
(legend is a kind of story)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for legends that I've seen before include "Old tales" , "The saintly lives" , "Myths or traditional stories" , "Myths or inscriptions" , "Folk tales" .)