Grant to relieve pain? (5)
I believe the answer is:
endow
'grant' is the definition.
(I've seen this in another clue)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for endow that I've seen before include "Provide with a permanent income, say a school" , "Woden (anag.)" , "Provide with a permanent income - perhaps a college" , "Invest" , "Give qualities or abilities to" .)