Happy new year Alan,
I couldn't let the first day of 2018 go by without providing you with at least, just one little headache.
Always happy to accept your adjudication on how any particular word should be classed, after all, do we have any choice, well yes we do because you are such a fair man that you are always prepared to listen to counter arguments & can even be persuaded to change your decision.
I stated in the other thread, that anyone who plays or follows cricket, knows what a sixer is.
You did acknowledge that with this quote " The cricket sense is pretty well known where cricket is played, but that's not everywhere."
Let me just emphasis that point by listing all the countries that I can think of that are qualified to play international test cricket, i'll let you do the maths as to how many billions of people throughout the world would be familiar the word sixer.
United Arab Emirates , Pakistan , Kenya, Zimbabwe, Scotland, West Indies, Sri Lanka, Bangladesh, Ireland, Afghanistan & New Zealand.
Oops , almost forgot to mention these other minnows, South Africa, India, England & Australia.
There are dozens of other cricket playing countries throughout the world that are classified as associate members while they try to build their game to the required level to be included with the test playing nations.
While you might not find " sixer " listed in too many " old " dictionaries, it is listed in my, brand new, latest edition compact Macquarie (thanks Santa ) with three meanings ; a heavy fall, a major setback & hitting a cricket ball out of the ground.
Thanks for your consideration, cheers Les.