See at first hand (7)
I believe the answer is:
witness
(Other definitions for witness that I've seen before include "Bystander" , "Spectator" , "Attest" , "Evidence, proof" , "Court testifier" .)
I believe the answer is:
witness
(Other definitions for witness that I've seen before include "Bystander" , "Spectator" , "Attest" , "Evidence, proof" , "Court testifier" .)