The defendant's attorney 'cross-examined' the witness and tried to show that his earlier testimony was false.
the 'examining room' [=a room in a doctor's office where the doctor examines patients]
He was 'examined' by several doctors, who found nothing wrong with him.
(..) Right. I'll just administer local anaethestic... Don't bother. Right, I...okay. Calm down, please. Put the gun down. I'm just going to...examine, OK? - Do you mind? - No. - Mom ? I don't know, it's night. I'm going to go inside. (..)2014 Lucy