King meets honoured people in ceremonial garb (5)
I believe the answer is:
robes
'ceremonial garb' is the definition.
'king meets honoured people' is the wordplay.
'king' becomes 'r' (r is abbreviation for rex).
'meets' is a charade indicator (letters next to each other).
'honoured people' becomes 'obes' (people with Order of the British Empire awards).
'r'+'obes'='ROBES'
'in' acts as a link.
(Other definitions for robes that I've seen before include "trappings of office?" , "Gowns" , "Ceremonial clothing" , "Long loose flowing garments" , "Attire" .)