convict
Concise Oxford English Dictionary © 2008 Oxford University Press:
convict
▶verb /kənˈvɪkt/ declare to be guilty of a criminal offence by the verdict of a jury or the decision of a judge in a court of law. ▶noun /ˈkɒnvɪkt/ a person convicted of a criminal offence and serving a sentence of imprisonment.
'convict' also found in these Oxford entries:

