ovary n.

Proto-Indo-European root meaning "bird." It also might be the source of *woyo, *oyyo, Proto-Indo-European words for "egg."

It forms all or part of: auspex; auspices; auspicious; avian; aviary; aviation; aviator; avicide; aviculture; aviform; caviar; cockney; egg (n.); ocarina; oo-; oocyte; oolite; oology; osprey; ostrich; oval; ovary; ovate (adj.); oviform; oviparous; ovoviviparous; ovoid; ovulate; ovulation; ovule; ovum.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit vih, Avestan vish, Latin avis "bird;" Greek aietos "eagle;" Old Church Slavonic aja, Russian jajco, Breton ui, Welsh wy, Greek ōon, Latin ovum, Old Norse egg, Old High German ei, Gothic ada all meaning "egg."

1560s, "a plane figure in the general shape of the lengthwise outline of an egg," from French ovalle "oval figure," from noun use of Medieval Latin ovalis "of or pertaining to an egg," from Latin ovum "egg" (see ovary). The earliest use of the word in English (mid-15c.) was in reference to a Roman crown awarded as the symbol of an ovatio (see ovation).