du ‧ o /ˈdjuːəʊ $ ˈduːoʊ/ BrE AmE noun ( plural duos ) [countable]
[ Date: 1500-1600 ; Language: Italian ; Origin: 'two' , from Latin ]
1 . two people who perform together or are often seen together:
the comedy duo Reeves and Mortimer
2 . a piece of music for two performers SYN duet
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THESAURUS
▪ pair two things of the same type that you use together. Also used about two people who do something together or who you often see together:
a pair of shoes
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a pair of socks
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Winners will receive a pair of tickets for the show.
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The pair were arrested six days after the killing.
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They're a funny pair!
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The British pair will be playing in the final on Saturday.
▪ a couple (of something) two things of the same type, or a very small number of things:
There were a couple of empty seats at the table.
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Do you have any stamps? I just need a couple.
▪ couple noun [countable] two people who are married or having a sexual relationship:
a married couple
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The couple met at university.
▪ twins noun [plural] two children who were born on the same day to the same mother:
The twins look very alike.
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identical twins
▪ duo noun [countable] two people who perform together or who are often seen together:
a comedy duo
▪ duet noun [countable] a piece of music written for two people to play:
They played a duet by Brahms.
▪ twice two times adverb :
The group meets twice a week.
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She sneezed twice.