Main Entry: di·a·dem

Pronunciation: \ˈdī-ə-ˌdem, -dəm\

Function: noun

Etymology: Middle English diademe, from Anglo-French, from Latin diadema, from Greek diadēma, from diadein to bind around, from dia- + dein to bind; akin to Sanskrit dāman rope

Date: 13th century

1 a : crown 2; specifically : a royal headband b : crown 6a(1)
2 : something that adorns like a crown