1. windows that are hinged at the side and open outward or inward
2. the frames or sashes of such windows

Examples

• The old cottage had wooden casements that creaked when opened.
• She pushed open the casements to let in the fresh morning air.
• The painter carefully removed the casements before starting work.
• Victorian homes often featured ornate iron casements.
• The casements were painted white to match the house’s trim.
• During the storm, we secured all the casements tightly.
• The casements in the library provided excellent natural light.