Rara Avis is a Latin phrase meaning 'rare bird' or 'unusual creature'. The term is often used to describe something that is unique and hard to find. The crossword solutions for the term Rara Avis are ODDITY (6 letters), PHOENIX (7 letters), and ONER (4 letters). ODDITY refers to something that is strange or unusual, while PHOENIX is a mythical bird that is said to be reborn from its own ashes. ONER is an archaic term for something that is unique or one-of-a-kind. Together, these three words capture the essence of the phrase Rara Avis, which is used to describe something that is rare and extraordinary.