British blueblood (4)
I believe the answer is:
earl
'british blueblood' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for earl that I've seen before include "A real peer" , "Noble title" , "... Grey, fragrant Oriental tea" , "British peer and Dublin street" , "Lear (anag)" .)