It's a language learning tool.
The Irish language is called "Irish" in Ireland, but often "Gaelic" elsewhere (depending on who you're speaking with).
The name we've ended up with is a mouthful of a compromise :)
I don't know if there's a fix for that...
"Bitesize Irish Gaelic" isn't great as a company name because it's so narrow, but "Bitesize" is a good name if you want to expand to other languages at some point. I don't know what you'd have to pay for the domain, but it's probably available since it's just parked right now.
Interestingly yours is the first site listed when Googling "Irish/Gaelic word for learning" so grats on your SEO.