What is the meaning of Cornucopia?

A goat's horn endlessly overflowing with fruit, flowers and grain; or full of whatever its owner wanted: or, an image of a such a horn, either in two or three dimensions.

A hollow horn- or cone-shaped object, filled with edible or useful things.

An abundance or plentiful supply.

cornucopia

cornucopia

cornucopia

Source: wiktionary.org