Trappings of royalty from Algeria (7)
I believe the answer is:
regalia
'trappings of royalty' is the definition.
(I've seen this before)
'from algeria' is the wordplay.
'from' indicates an anagram (from the letters).
'algeria' with letters rearranged gives 'REGALIA'.
(Other definitions for regalia that I've seen before include "Royal paraphernalia" , "Ceremonial trimmings of high office" , "Royal insignia" , "Orb and sceptre, for example" , "Insignia of royalty or office" .)