twin
twin
noun
One of two children born at the same time to one mother.
"My aunt gave birth to twins."
verb
To pair or combine two similar things closely together.
"The towns twinned for cultural exchange."
adjective
Being one of two children born together at the same birth.
"My twin sister lives in London."
Thesaurus
Synonyms: Twin Falls, duplicate, parallel, Gemini, counterpart, similitude, match, couple, pair, mate