Alicorn

My sources disagree on when a certain term appeared--
Perhaps the 14th century or 1966.
This quandary is partly why I find the term quite weird,
The other reason being that it sometimes means a mix

Of unicorn and Pegasus but also can allude
To just the horn of such a beast. In fact, I tend to find
That sources list one meaning while the other is eschewed.
I wonder how that came about and which was first assigned.

It's said we got the term from alicorno in Italian.
The al- part might mean "wing" or just be Arabic for "the."
In any case, we're speaking of a mythic mare or stallion.
Should we abandon alicorn for clarity? Uh-huh.