Definitions

1. noun

A raised frame or edge around a hatch, porthole, or other opening, especially in a ship or aircraft, to prevent water or air from entering.

“The coaming around the porthole helped to keep the rain out of the cabin.”

2. noun

A molding or trim along a wall or the edge of a ceiling, especially in a building.

“The decorative coaming around the fireplace added a touch of elegance to the room.”