As formerly worn by a peer wandering around the kingdom? (6)
I believe the answer is:
peruke
'as formerly worn by a' is the definition.
I can't tell whether this definition defines the answer.
'peer wandering around the kingdom?' is the wordplay.
'wandering' indicates anagramming the letters.
'around' indicates putting letters inside.
'the kingdom?' becomes 'UK' (UK is an example).
'peer' anagrammed gives 'pere'.
'pere' going around 'uk' is 'PERUKE'.
Can you help me to learn more?
(Other definitions for peruke that I've seen before include "18th-century wig" , "Ancient wig" , "Periwig" , "Old fashionable wig" .)