Symbol
Its white coloring made it a natural symbol for purity, chastity and virginity. The horn of the unicorn was the weapon of the faithful and of Christ.
The mythological unicorn was a symbol of chivalry with qualities befitting this status, proud and untamable.
The legend of the hunter and virgin bait became an allegory of the Incarnation of the Christ and was later forbidden by the Council of Trent because of the lack of real unicorns in the present world.