Mean to endure? (5,3)
I believe the answer is:
stand for
I believe this is a double definition.
'mean' is the first definition.
(standing for is a kind of meaning)
'endure?' is the second definition.
(standing for is a kind of enduring)
'to' is the link.
(Other definitions for stand for that I've seen before include "champion" , "Represent - in upright posture?" , "Represent while on feet?" , "support" , "Be representative of or tolerate" .)