trio
noun
[ ˈtriːəʊ ]
• a set or group of three people or things.
• "the hotel was run by a trio of brothers"
Similar:
threesome,
three,
triumvirate,
triad,
troika,
triplex,
trinity,
trilogy,
triptych,
triplets,
triunity,
triune,
triplicity,
Origin:
early 18th century: from Italian, from Latin tres ‘three’, on the pattern of duo .