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rara avis

American  
[rair-uh ey-vis, rah-rah ah-wis] / ˈrɛər ə ˈeɪ vɪs, ˈrɑ rɑ ˈɑ wɪs /

noun

plural

rarae aves

  1. a rare person or thing; rarity.

rara avis British  
/ ˈrɛərə ˈeɪvɪs /

noun

  1. an unusual, uncommon, or exceptional person or thing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of rara avis

First recorded in 1600–10, rara avis is from Latin rāra avis “rare bird”

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.