King, say, in shelter raised part of crown (6)
I believe the answer is:
enamel
'part of crown' is the definition.
('enamel' is part of 'crown')
'king say in shelter raised' is the wordplay.
'king say' becomes 'man' (king is a kind of man).
'in' indicates putting letters inside.
'shelter' becomes 'lee' (as in lee side, the side sheltered from wind).
'raised' says the letters should be written in reverse (going up in a down clue).
'man' going within 'lee' is 'lemane'.
'lemane' backwards is 'ENAMEL'.
(Other definitions for enamel that I've seen before include "Ale men (anag.)" , "hard cover" , "Glassy substance" , "Hard glossy surface" , "Smooth hard paint" .)