twin

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twin

1. 
a. either of two persons or animals conceived at the same time
b. (as modifier): a twin brother
2. a crystal consisting of two parts each of which has a definite orientation to the other

twin

[′twin]
(biology)
One of two individuals born at the same time.
(crystallography)
References in periodicals archive ?
'My twin brother and I went out to find out what was happening.
When he was told he could not, he left, but returned later on after changing clothes, with his twin brother's ID card.
Private grief: Kyle's twin brother Irwin, left, helps carry his coffin
No one knows how many times --dozens or perhaps hundreds?--James had successfully pulled off the "I'm my twin brother" scam.
Today twin brother Thomas John said: "I would always tell people to wear a helmet now.
A COMPANY set up by an optometrist and his twin brother is trialling a range of football club-branded sunglasses for sports retail giant JJB Sports.
Summary: The Bee Gees' musical career began when Robin and his twin brother Maurice were just eight years old
She was one of three sets of twins, predeceased by her twin brother Nick Vissar, twin brothers Robert and Stephen Vissar, and her sister Christine Kasparek.
Joaquin Castro, D-San Antonio, talked about the future prospects in politics - state and national - of his twin brother, San Antonio Mayor Julian Castro.
Now he is being joined by twin brother Andy and the duo are to pound the beat on patrol in Oldbury, in the Black Country.
He was apparently resentful about his twin brother's inheritance and feared being jailed for tax evasion when he set out on his 45-mile trail of destruction across Cumbria.
I lost my entire family, including my twin brother. What is left for me?"Al Daia paraphrased Algerian writer Mohammad Dib, saying, "In war those who die are always unfortunate, but those who are left behind are orphansC*"Nearby the house upon impact of the missiles, Al Daia said, "I cannot forget the sound of the missile and the explosion and the house on the ground and body parts flying around meC* my family is gone but I still recall what happened here in detail."The bodies from Al Daia's family were in pieces as was the case for thousands of the dead during three weeks in Gaza, but as with every number there are more left behind to mourn.