Twin Definition

twĭn
twinned, twinning, twins
noun
twins
Either one of two offspring from the same pregnancy: twins are either identical (produced from the same ovum) or fraternal (produced from separate ova)
Webster's New World
Either one of two persons or things very much alike in appearance, shape, structure, etc.
Webster's New World
A compound crystal of two crystals or parts having a common face but in reversed positions with respect to each other.
Webster's New World
A twin-size bed.
American Heritage
Webster's New World
adjective
Being one of a pair of such things; being a counterpart.
Webster's New World
Being either one of two offspring from the same pregnancy.
A twin sister.
Webster's New World
Consisting of or being two separate but similar or closely related things; forming a pair; double; paired.
Webster's New World
Being two offspring from the same pregnancy.
Twin girls.
Webster's New World
Of or relating to structures, such as flowers, that occur in pairs.
American Heritage
verb
twinned, twinning, twins
To give birth to twins.
Webster's New World
To give birth to as twins.
Webster's New World
To be paired or coupled (with another)
Webster's New World
To be born at the same birth.
Webster's New World
To pair or couple.
Webster's New World
prefix

Of or relating to twins or being a twin.

Wiktionary

Having or consisting of two, double, twofold.

A twin-engine plane.
This boat is twinhulled.
Wiktionary

Existing as a pair.

They require a twin-bed accommodation.
Wiktionary
idiom
the Twins
  • Gemini, the constellation and third sign of the zodiac
Webster's New World

Other Word Forms of Twin

Noun

Singular:
twin
Plural:
twins, twins

Idioms, Phrasal Verbs Related to Twin

  • the Twins

Origin of Twin

  • Middle English from Old English twinn twofold dwo- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From twin.

    From Wiktionary

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