IPA: /ˈtrɪplɪt/
KK: /ˈtrɪplɪt/
A set of three things or people that are similar or related in some way.
The triplet siblings all have the same birthday.
Triplet → It is formed from "tri-" (meaning three) and "plet" (from Latin "plere", meaning to fill). The word "triplet" refers to a group of three things that are filled or occur together.
Think of the prefix 'tri-' meaning three, and 'plet' relating to filling or grouping — that's why a triplet is a group of three.