Translating "百會", acupuncture point DU-20

Explanation of the point name

百 is often translated as 'one hundred' and taken to mean 'many' or 'all.' With that meaning, it makes more sense to translate it as 'hundreds of,' when keeping the number. In the Chinese there is no indication of singular or plural, so 'hundreds' is just as valid as 'one hundred.'

With 會 usually translated as 'join' or 'meet,' what, of which there are many, joins or meets here?

Could that be the bones of the skull? Why is the character 骨 'bone' not there, then, as it is in other point names, like for example BL-65 束骨, Bundle of Bones?

Elsewhere, it is said that at this point all Yang channels join. However, in actuality only three, so half of the Yang channels, are known to join at this point (BL, GB, TB). And one Yin channel, namely the Liver. That is not enough to warrant the use of the character 百. There is no Yang in the name, so why the Yang channels? There may be confusion here with an alternate name for this point, 三陽, but that is clearly about three Yangs, which could be these three Yang channels here.

Apparently, 會 must mean something else here, than the usual 'join' or 'meet.' Interestingly, it can also mean to 'understand,' 'comprehend,' 'realize' or 'perceive.' Those are things that go on in the head, that this point influences. It clears and invigorates the mind. This does make sense.

I'm going with 'realizations,' as this a noun that is easily understood as an event of understanding (the word 'understandings' could be confusing).