threesome

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threesome in WordNet English dictionary

noun

the cardinal number that is the sum of one and one and one
three 3 III trio threesome tierce leash troika triad trine trinity ternary ternion triplet tercet terzetto trey deuce-ace
three people considered as a unit
trio threesome triad trinity

WordNet Lexical Database v3.0, © 2006 Princeton University

threesome in English Wiktionary

(noun) A group of three people.
(noun) An instance of sexual activity involving three people.

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