In the end the tomb inscription may be (8)
I believe the answer is:
engraved
'inscription may be' is the definition.
I can't judge whether this defines the answer.
'in the end the tomb' is the wordplay.
'in' indicates putting letters inside.
'the tomb' becomes 'grave' ('grave' can be a synonym of 'tomb').
'end' enclosing 'grave' is 'ENGRAVED'.
Can you help me to learn more?
(Other definitions for engraved that I've seen before include "deeply impressed" , "Carved into surface" , "Cut, carved (a design)" , "Cut or impressed into a surface" .)