Cornucopia

For some reason, I have been thinking about this word for more than a week now:

Cornucopia.

There's a word you see around Thanksgiving, and not much any time else.

My pocket dictionary says it is a symbol for abundance, and synonymous with "horn of plenty." It's from Latin. I know what one looks like, but what is it actually made from? Is it a wicker basket, in an unusual shape, or a hollowed-out gourd...?

–noun
1. Classical Mythology. a horn containing food, drink, etc., in endless supply, said to have been a horn of the goat Amalthaea, who provided milk for Zeus as a baby.
2. a representation of this horn, used as a symbol of abundance.
3. an abundant, overflowing supply.
4. a horn-shaped or conical receptacle or ornament.

I have seeen pictures of cornucopia, and sometimes it doesn't look like a basket. But I never knew that it was supposed to be a horn from a GOAT! But it must have been an enormous goat!