Male peer (4)

I believe the answer is:
lord
'male peer' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for lord that I've seen before include "Dismayed expression; ruler" , "Male peer" , "Until 2006 the presiding officer of the House of Lords and head of the judiciary" , "Titled nobleman" , "Member of Upper House" .)