triplets
trip-lets
noun
A group or set consisting of three similar or related items.
"The triplets of notes created harmony."
noun
Three babies born to the same mother at one birth.
"She was delighted to welcome her triplets."
Thesaurus
Synonyms: threesome, troika, tercet, three, deuce-ace, trinity, III, triad, tierce, trine, 3, ternary