Triad
Part of speech: noun
Definition: A grouping of three A chord consisting of a root tone, the tone two degrees higher, and the tone four degrees higher in a given scale. on a CRT display, A group of three neighbouring phosphor dots, coloured green, red, and blue. A collective term that describes many branches of the underground society based in Hong Kong.
Trey
Part of speech: noun
Definition: A playing card with the rank of three.