Just been a question on the chase about what this word meant and as soon as it was said I knew it were something the do with laughing or sniggering and sure enough laughing was on the choices. Many years ago the phrase he’s caching (cacking) at you was common in this area and no one says it now or at least I haven't heard it for a long time
Not heard the phrase cachination but can remember the phrase cachin pronounced cackin being used especially among the older miners and my grandparents .