ex·am·ine-in-chief(past and past participleex·am·ined-in-chief, present participleex·am·in·ing-in-chief, 3rd person present singularex·am·ines-in-chief)
transitive verb
Definition:
U.K. question supporting witness: to ask questions of a witness or other person in a court of law who is giving primary evidence in support of the case being presented by the questioner. See also cross-examine