The Collaborative International Dictionary
Cove \Cove\, v. t. [imp. & p. p. Coved (k?vd); p. pr. & vb. n. Coving.] (Arch.) To arch over; to build in a hollow concave form; to make in the form of a cove.
The mosques and other buildings of the Arabians are
rounded into domes and coved roofs.
--H.
Swinburne.
Coved ceiling, a ceiling, the part of which next the wail is constructed in a cove.
Coved vault, a vault composed of four coves meeting in a central point, and therefore the reverse of a groined vault.
Wikipedia
Usage examples of "coved ceiling".
Above, a coved ceiling projected through the upper floor, and had set in it the light towards which the Regent had directed her notice.
Eve was given an instant impression of grandeur and noticed the gold and crystal chandelier hanging from the painted, coved ceiling, and the fine china, crystalware, and silverware glittering on the table beneath the light of the candles.
The bed was big as a lake, its four posters spearing toward the deeply coved ceiling.
The room was low with a coved ceiling, and occupied the whole top of the house, immediately under the roof.
The white walls and coved ceiling, here in the hallway as in the rooms, were neatly plastered as in many prosperous homes in Tasavalta.