Please don't name it just "Meta", it will make it a lot more difficult to find resources for it in the web. Imagine googling for "meta", "meta lang", "meta language", "metalang". Maybe something to go with "meta", like MetaCaml.
I tried to see if there might be a more generic animal name to use for inspiration, and so learned that: "The even-toed ungulates (Artiodactyla) are ungulates (hoofed animals) whose weight is borne approximately equally by the third and fourth toes, rather than mostly or entirely by the third as in odd-toed ungulates (perissodactyls), such as horses.". Which while somewhat interesting doesn't really reveal an immediately usable name. But at least Artiodac should be unique...
Anyway, the Hyrax looks almost as interesting as the honey badger -- certainly a worthy code name -- but perhaps not for meta(o)caml IMNHO.
[edit: re-reading the language authors comment that: "It will be for OCaml what Elixir is for Erlang." -- I suppose something that is to a Camels as Elixir is ... to an abstract concept? Options might include: Water, Bedouin, Desert?
I also note that: "The earliest known camel, called Protylopus, lived in North America 40 to 50 million years ago (during the Eocene). It was about the size of a rabbit and lived in the open woodlands of what is now South Dakota."
I don't think protylopus is a very good name either, but probably better than ungulate. Perhaps "Dakota Caml" or Dakota Meta Language (dml) might work :-) ]