Meat cooked by boring lodger perhaps (8)
I believe the answer is:
flatmate
'lodger perhaps' is the definition.
'meat cooked by boring' is the wordplay.
'cooked' is an anagram indicator.
'by' says to put letters next to each other.
'boring' becomes 'flat' (flat can mean dull or lifeless).
'meat' anagrammed gives 'mate'.
'mate' after 'flat' is 'FLATMATE'.
(Other definitions for flatmate that I've seen before include "Fellow apartment resident" , "Person sharing apartment" , "Cohabitee" , "Apartment sharer" , "one sharing same pad" .)