There isn't a single clear cut normal but it is still an actual concept, usually it can be gathered what most people mean when they say 'normal' typically it is referring to what is seen to be typical in that society as far as social interaction and such like...to me being told even that definition doesn't exist and there is under no circumstances any 'normal' just makes things a bit confusing when it comes to trying to talk about my life experiences....I mean I got told a lot of ongoing issues I had where just 'normal' meaning I got no help or understanding about it....I mean I suppose I figure I wasn't just having normal adolescent/teenage issues if I attempted suicide at 15. I guess to me its kind of like if I say how I was mostly bullied and ostracized at school ongoingly even when switching schools a lot.....and someone says well everyone gets bullied..sure I bet everyone has had at least on instance where someone for no reason tries to cause them distress, but I do not think most people where ongoingly bullied and ostracized throughout school, regardless of moving schools repeatedly to the extent it got in the way of them developing a healthy amount of confidence and self worth.

But it is certainly a kind of vague concept with many meanings, as for the dryer though....I thought most said regular, not that it really matters...I suppose normal, typical, regular are even somewhat interchangable and can be used in different contexts.