A monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice. / The bulb of such a plant. / (uncountable) The genus Allium as a whole. / (slang, of a drug) An ounce.

plural of onion

A surname from Welsh [in turn originating as a patronymic].

Flavoured or made with onion.

(informal, rare) Flavoured with, or converted into, onion; made oniony.

plural of onion dome

(architecture) An onion-shaped dome, characteristic of august buildings in Moghul and Russian architecture

Wild or feral chives, garlic, or other species with grass-like leaves in the genus Allium, particularly

A large hand-blown glass bottle used aboard ships to hold wine or brandy.

plural of glass onion