I came across this word in this YouTube video (queued to example) and was curious about the origin.
Example image of an alpaca kushing.
I can't find the definition as defined in the linked image in any dictionary. I tried a general Google search and various print dictionaries, including an (albeit dated) unabridged Oxford and a couple of (again, dated) American dictionaries. Surprisingly, the word did not appear at all in the Oxford.
The best I got was this alpaca breeding website. It's described as a way of sitting either to keep warm or for females receptive to breeding. But none of the definitions I found related to that at all.
The definitions I did find most often were in regards to the biblical son of Ham (who was the son of Noah) and a region of Africa (possibly) named after him. For slang, it's another word for "money" and a type/preparation of marijuana similar to hashish.