The unicorn was depicted in ancient seals of the Indus Valley Civilization and was mentioned by the ancient Greeks in accounts of natural history by various writers, including Ctesias, Strabo, Pliny the Younger, and Aelian. In the Middle Ages and Renaissance, it was commonly described as an extremely wild woodland creature, a symbol of purity and grace, which could only be captured by a virgin. In the encyclopedias its horn was said to have the power to render poisoned water potable and to heal sickness.
Unicorn pursuant to Wikipedia. Legendary unicorn that has been since ancient times with a single point, protruding spiral of the unicorn has portrayed seals of the indus civilization mentioned greek accounts various history, including ctesias, younger plice, aelian.
Unicorn in agreement with Merriam-webster. Mythical, usually animal usually with a horse body with a simple flowing mane often medium horn animal mentioned as generally aurochs.