1. a person who gets up from bed, especially at a particular time
2. the vertical part of a step or stair
3. a vertical pipe or conduit
Usage: technical

Examples

• She’s an early riser who gets up at 5 AM every day.
• My grandfather was always a late riser on weekends.
• The carpenter measured each riser to ensure the stairs were uniform.
• The wooden risers were painted white to match the handrail.
• The plumber installed a new water riser in the building.
• Each apartment has its own gas riser for heating.