a removable, fitted cloth cover for an armchair, sofa, etc.
transitive verb-·cov·ered, -·cov·er·ing
to cover (a chair, etc.) with a slipcover
A fitted removable cover of cloth or other material for a piece of upholstered furniture.
transitive verbslip·cov·ered, slip·cov·er·ing, slip·cov·ers
To provide with slipcovers or a slipcover.