cove 1 
(k
ōv)
n.1. A small sheltered bay in the shoreline of a sea, river, or lake.
2. a. A recess or small valley in the side of a mountain.
b. A cave or cavern.
3. A narrow gap or pass between hills or woods.
4. Architecture a. A concave molding.
b. A concave surface forming a junction between a ceiling and a wall. Also called coving.
tr.v. coved,
cov·ing,
coves To make in an inward curving form.
[Middle English, chamber, cave, from Old English cofa.]