Hi JayKay
Good question - I'd always just accepted the definition of CAVOK as per your definition above, without going back to source.
The BOM defines CAVOK as just "Cloud and Visibility OK" which is not particularly helpful to us!
The AIP (AIP GEN 2.2) defines CAVOK in Australia as "Visibility, cloud and present weather better than prescribed values or conditions", again not much of a help!
To get to nub of it you need to go to AIP GEN 3.5 4.4.1g which pretty much defines it as per your earlier post, ie vis>10km, no cloud < 5000ft, no TCU, no CB, no significant weather.
Makes it a bit tough when you have to search that hard I guess - why couldn't the BOM and both bits of the AIP use a consistent definition? I suppose the answer is that if the ICAO changed their definition, then we'd only have to change it in one place - but there's surely gotta be a better way!