That's a very poor definition and would include someone who is, asleep.... The twins, were not unconscious
Yes, those dictionaries can't be trusted. So, as you spoke with Kate ,obviously, why did she say they were drugged/sedated and who did this without medical knowledge? She obviously suggested it for some reason.
It's great you have all this information to hand.
I know some weird doctors who say when you are in a deep sleep this can be classed as being unconscious.... again ppft what would they know...
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We can discount the likelihood that Madeleine woke and wandered or got up and had an accident or accidentally died which leaves abduction, and would explain why she didn't wake up during the abduction.

My argument is quite simple. IF Kate suggested the children were drugged, she must have had a suspicion at the time- OR if going by that memory thingy they suffer from, and she had this as an afterthought then whom did she think would do this. The fact she is an expert she could have at least explained how this could have been done. Considering the timing and knowledge of drugs and getting it right.
I do not know if the children were drugged or not. I am merely discussing what Kate said.
ps a paedo gang would not take one child and leave the other two!!!