A unicorn is a mythical creature that has the body, tail and back legs of a horse, a lion's head, and a single horn protruding from its forehead. It is often depicted as a symbol of purity, grace, and strength, with its magical powers including healing abilities and the ability to make poisonous creatures harmless. The unicorn has been featured in many stories, legends, and fairy tales throughout history, representing hope, love, and happiness.