ˈthōˌläs noun
or tho·lus -ōləs
( plural tho·loi -ōˌlȯi ; or tho·li -ōˌlī)
Etymology: Greek & Latin; Latin tholus rotunda, tholos, from Greek tholos
1. : a round building of classical Greek date and style
2. : a circular tomb of beehive shape approached by a horizontal passage in the side of a hill