Person one's relatives needle (6)
I believe the answer is:
bodkin
'needle' is the definition.
(I've seen this before)
'person one's relatives' is the wordplay.
I cannot really understand how this works, but
'person' could be 'bod' (bod can informally mean a person or body) and 'bod' is found in the answer.
'relatives' could be 'kin' (kin can mean relatives or family) and 'kin' is located in the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for bodkin that I've seen before include "dagger" , "Thick, blunt needle with a large eye" , "tool for correcting type" , "Small blunt needle" , "punch" .)