trio

noun

1. the cardinal number that is the sum of one and one and one

   noun.quantity

   Synonyms 3 deuce-ace iii leash tercet ternary ternion terzetto three threesome tierce trey triad trine trinity triplet troika

   Source: WordNet 3.0

2. a musical composition for three performers

   noun.communication

   Source: WordNet 3.0

3. three performers or singers who perform together

   noun.group

   Source: WordNet 3.0

4. a set of three similar things considered as a unit

   noun.group

   Synonyms triad triple triplet

   Source: WordNet 3.0

5. three people considered as a unit

   noun.group

   Synonyms threesome triad trinity

   Source: WordNet 3.0

6. Three, considered collectively; three in company or acting together; a set of three; three united.

   noun

   Source: webster1913