Small wheels mounted on swivels, typically attached to the legs or base of furniture or equipment to allow easy movement.
From Dutch 'castor' (to rotate or turn), related to the Latin 'castrum'. The term became standard in English for furniture hardware by the 18th century.
Office chair casters are one of those ubiquitous inventions we never think about—but they completely changed office work culture. Before wheeled casters, workers stayed in one spot all day. After? The modern flexible office workspace became possible!
Complete word intelligence in one call. Free tier — 50 lookups/day.