onion

onion

onion [onion onions]   [ˈʌnjən]    [ˈʌnjən]  noun

countable, uncountable
a round vegetable with many layers inside each other and a brown, red or white skin. Onions have a strong smell and flavour
• Chop the onions finely.
• French onion soup  
Word Origin:
Middle English: from Old French oignon, based on Latin unio(n-), denoting a kind of onion.  
Example Bank:
• Garnish with a little chopped onion.
• Put the chopped onion and garlic in the pan…
• a jar of pickled onions
• cheese and onion flavoured crisps
• sage and onion stuffing

• the onion domes of St Basil's Cathedral