(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it | an architectural partition with a height and length greater than its thickness; used to divide or enclose an area or to support another structure |
a passageway under a curved masonry construction | an embankment built around a space for defensive purposes |
a curved bony structure supporting or enclosing organs (especially the inner sides of the feet) | a masonry fence (as around an estate or garden) |
a curved shape in the vertical plane that spans an opening | a layer of material that encloses space |
| (anatomy) a layer (a lining or membrane) that encloses a structure |
| anything that suggests a wall in structure or function or effect |
| a vertical (or almost vertical) smooth rock face (as of a cave or mountain) |
| a difficult or awkward situation |