n. [ F. ognon, fr. L. unio oneness, unity, a single large pearl, an onion. See One, Union. ]
Onion fish (Zool.),
Onion fly (Zool.)
Welsh onion. (Bot.)
Wild onion (Bot.),
n. (Architecture) A dome with a pointed top, its width often extending beyond the width of the tower it covers; -- a style of architecture characteristic of Russian Orthodox churches. [ PJC ]
n. [ Onion + skin. ] A kind of thin but strong translucent paper with a glossy finish. [ Webster 1913 Suppl. ]