Pavo Syllabification: (Pa·vo)Pronunciation: /ˈpāvō/ AstronomyDefinition of Pavo a southern constellation (the Peacock), between Grus and Triangulum Australe. Its brightest star is itself sometimes called “the Peacock.”. (as genitive Pavonis /pəˈvōnis/) used with a preceding letter or numeral to designate a star in this constellation:the star Beta PavonisOrigin:LatinPavo in other Oxford dictionaries Definition of Pavo in the British & World English dictionary