Ghost out of place in group dressed in black? (5)
I believe the answer is:
goths
'place in group dressed in black?' is the definition.
Although both the answer and 'black?' are nouns, they are not in the same form of the noun.
'ghost out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'ghost' with letters rearranged gives 'GOTHS'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for goths that I've seen before include "A Teutonic people who invaded the Roman Empire" , "Germanic invaders of Roman empire" , "Ancient Germans who gave their name to a style of architecture" , "Rome's Germanic invaders" , "Tribesmen who brought down the Roman empire" .)