The term 'unicorn, for one' can be solved by the crossword solution 'EQUINE, ' which is a six-letter word. An EQUINE is a hoofed mammal of the family Equidae, which includes horses, donkeys, and zebras. The unicorn is a mythical creature that is often depicted as a white horse with a single horn protruding from its forehead. It is believed to have originated in ancient Mesopotamian and Greek cultures and has been featured in literature and art throughout history.