Meaning of TWIN in English

TWIN

/ twɪn; NAmE / noun , verb , adjective

■ noun

1.

one of two children born at the same time to the same mother :

She's expecting twins.

—see also conjoined twin , fraternal twin , identical twin , Siamese twin

2.

one of two similar things that make a pair

■ verb ( -nn- ) [ vn ] twin sth (with sth)

1.

[ usually passive ] to make a close relationship between two towns or areas :

Oxford is twinned with Bonn in Germany.

2.

to join two people or things closely together :

The opera twins the themes of love and death.

■ adjective [ only before noun ]

1.

used to describe one of a pair of children who are twins :

twin boys / girls

a twin brother / sister

2.

used to describe two things that are used as a pair :

a ship with twin propellers

3.

used to describe two things that are connected, or present or happening at the same time :

The prison service has the twin goals of punishment and rehabilitation.

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WORD ORIGIN

late Old English twinn double , from twi- two ; related to Old Norse tvinnr . Current verb senses date from late Middle English .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.