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twosome

/ˈtuːsəm/ noun

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about twosome at Wordnik → Where our words come from →

  1. Two items of the same kind.
  2. A pair who associate with one another.
    the engaged couple

Origin

From Middle English twosome, equivalent to two + -some. Cognate with Scots twasome, twaesome (“twosome”).

From Wiktionary, via Kaikki.org (CC BY-SA)