The Collaborative International Dictionary of English v.0.48:
Cross-examiner \Cross"-ex*am"in*er\ (-?r), n. One who cross-examines or conducts a crosse-examination. [1913 Webster]WordNet (r) 3.0 (2006):
cross-examiner n 1: someone who questions a witness carefully (especially about testimony given earlier) [syn: cross-examiner, cross- questioner]