Proof (8)
'proof' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for evidence that I've seen before include "Witness's testimony" , "Pressing necessity" , "Facts presented in court" , "Testimony - verification" , "Facts and figures relevant to a case" .)
'proof' is the definition.
(verification is a kind of proof)
This is the entire clue.
(Other definitions for verification that I've seen before include "Checking of accuracy" , "checking for truth" , "Proof of a claim" .)