Meaning of TWIN in English

TWIN

I. twin 1 /twɪn/ BrE AmE noun [countable]

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

The twins are now eight months old.

⇨ ↑ identical twin , ↑ Siamese twin

II. twin 2 BrE AmE adjective [only before noun]

[ Language: Old English ; Origin: twinn 'double' ]

1 . used to describe one of two children who are twins

twin sister/brother

Meet my twin sister.

2 . used to describe two things that happen at the same time and are related to each other:

the twin problems of poverty and unemployment

3 . twin room/bedroom a room that contains two single beds:

All the twin rooms have private bathrooms.

⇨ ↑ twinset , ↑ twin town

III. twin 3 BrE AmE verb ( past tense and past participle twinned , present participle twinning ) [transitive usually passive]

1 . British English to form a relationship between two similar towns in different countries in order to encourage visits between them

twin something with something

Chichester in England is twinned with Chartres in France.

2 . to form a relationship between two places, people, or ideas

twin something with something

Dole has been twinned in the history books with his old rival Bush.

⇨ ↑ twin town

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.