Scottish feudal lord (5)
I believe the answer is:
thane
'scottish feudal lord' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for thane that I've seen before include "Scots tenant of the crown, often a clan chief" , "Macbeth's Cawdor title" , "Anglo-Saxon aristocrat - old Scottish clan chief" , "baron once" , "Medieval lord" .)