Definition of regalia noun from the Oxford Advanced Learner's Dictionary

 

regalia

 noun
noun
BrE BrE//rɪˈɡeɪliə//
 
; NAmE NAmE//rɪˈɡeɪliə//
 
[uncountable]
 
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the special clothes that are worn or objects that are carried at official ceremonies a portrait of the queen in full regalia Word Origin mid 16th cent. (in the sense ‘royal powers’): from medieval Latin, literally ‘royal privileges’, from Latin, neuter plural of regalis ‘regal’.
See the Oxford Advanced American Dictionary entry: regalia