'Horn' in the Bible

You may have as food any beast which has a division in the horn of its foot, and whose food comes back into its mouth to be crushed again.

But, at the same time, of those beasts, you may not take for food the camel, because its food comes back but the horn of its foot is not parted in two; it is unclean to you.

And the hare, because the horn of its foot is not parted in two, is unclean to you.

And the pig is unclean to you, because though the horn of its foot is parted, its food does not come back.

Every beast, in the horn of whose foot there is not a complete division, and whose food does not come back, is unclean to you: anyone touching one of these will be unclean.

Then let the loud horn be sounded far and wide on the tenth day of the seventh month; on the day of taking away sin let the horn be sounded through all your land.