OK, I made that one up, myself! It is an acronym I created for, “Yet Another Backup Article” - it was created around the time I was writing my fourth or fifth article on why people should be diligent about backing up their computer data. Go ahead, search for; “Yet Another Backup Article” - with or without the quotes and you’ll find my blog post!
Back to Webster’s, we find ya, yabber, and yabby. Ya is what ya think it is; an abbreviation of “you.” Yabber is perhaps an altered form of jabber, a word based on ya-speak, talk, in Gabi (Australian Aboriginal language spoken in the Maryborough district, S Queensland). Yikes, it’s sometimes tought to type entries from the dictionary!
Yabby is a small Australian crawfish, of the genus Cherax, inhabiting streams and water holes. This word is derived from that ya-speak mentioned above, which is also called yabiji, spoken around Wimmera, Victoria.
So, there ya have it. Most of the words in the first column in the Y section are about Australian things. One more thing about acronyms for YA, from my programming education; YACC means, yet another C compiler.