His lordly, upright figure has a covering of fat (5)
I believe the answer is:
laird
'his lordly upright figure has a covering of fat' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
This is all the clue.
Can you help me to learn more?
(Other definitions for laird that I've seen before include "Scot. landowner" , "Scottish estate-owner" , "He's landed in Scotland" , "Estate landowner" , "Scots landowner" .)