1) Question aggressively 2) Question minutely 1) Examine closely or minutely 
• (v. t.) To examine or question, as a witness who has been called and examined by the opposite party.
Cross'-ex·am'ine transitive verb [ imperfect & past participle Cross-examined (-?nd); present participle & verbal noun Cross-examining .] (Law) To examine or question, as a witness who has been called and examined by the opposite p...
[v] - question closely. or question a witness that has already been questioned by the opposing side
cross question verb question closely, or question a witness that has already been questioned by the opposing side; `The witness was cross-examined by the defense`
to examine by questions intended to check a previous examination; examine closely or minutely. · to examine (a witness called by the opposing side), as for the purpose of discrediting the witness's testimony. Cf. direct-examine.