IPA: /ɪˈpɪsˌtaɪl/
KK: /ɪˈpɪsˌtaɪl/
A horizontal beam that rests on top of columns in classical architecture, often supporting a structure above it.
The ancient temple featured a beautifully carved epistyle that enhanced its grandeur.
Epistyle → It is formed from "epi-" (meaning upon or over) and "stylos" (meaning column or pillar in Greek). The word refers to a horizontal beam placed upon columns, thus literally meaning a structure that is placed over columns.
Think of something that is placed 'upon' ('epi-') columns ('stylos') — that's why an epistyle is a beam resting on columns.