IPA: //ˈtrɛfɔɪl//
KK: /ˈtrɛfɔɪl/
A type of leaf or plant that has three leaflets, often used as a decorative symbol or in architecture.
The garden was filled with beautiful trefoils that added a unique touch to the landscape.
Trefoil is formed from "tri-" (meaning three) and "folium" (meaning leaf). The word describes a plant or design that has three leaves or leaflets, resembling a clover.
Think of 'three' ('tri-') leaves ('folium') coming together — that's what trefoil means.