Cost adjuster sometimes called "Jimmy" (4)
I believe the answer is:
scot
'called jimmy' is the definition.
Although both the answer and definition are singular nouns, I don't understand how one could define the other.
'cost adjuster sometimes' is the wordplay.
'cost' can be anagrammed to 'SCOT'.
However, I'm unsure how the anagram is indicated.
Can you help me to learn more?
(Other definitions for scot that I've seen before include "Eg Aberdonian" , "British northerner" , "Native of Caledonia" , "---- free: originally free from penalties of taxation" , "Glaswegian, say" .)