molding

US /ˈmoʊl.dɪŋ/
UK /ˈmoʊl.dɪŋ/
"molding" picture
1.

a shaped strip of wood or other material used as a decorative architectural feature, typically around the top of a wall or door

:
The old house had intricate wooden molding around the ceilings.
We need to replace the damaged crown molding in the living room.
2.

the action or process of shaping something

:
The clay required careful molding to achieve the desired shape.
The artist specialized in the molding of intricate sculptures.