re ‧ ga ‧ li ‧ a /rɪˈɡeɪliə/ BrE AmE noun [uncountable]
[ Date: 1500-1600 ; Language: Medieval Latin ; Origin: Latin , from regalis ; ⇨ ↑ regal ]
traditional clothes and decorations, used at official ceremonies:
the royal regalia (=worn by a king or queen)
a pipe band in full regalia (=wearing all their traditional clothes, decorations etc)