riser
/ˈraɪzər/
noun
- A person who gets out of bed at a particular time.
- Early risers often enjoy the quiet morning hours.
- My grandmother is an early riser and wakes up at 5 a.m.
- He's a late riser who prefers to sleep until noon on weekends.
- The vertical part of a step or stair between two treads.
- The carpenter measured the height of each riser carefully.
- A broken riser can be a tripping hazard on the staircase.
- The stairs had wooden treads and white painted risers.
- A platform or stage that is raised above the ground, often used in theaters or for seating.
- The band members climbed onto the risers before the concert.
- The choir stood on risers so everyone could see them.
- The school set up metal risers in the gym for the assembly.
- A vertical pipe or duct that carries water, gas, or electrical wiring between floors of a building.
- A leak in the gas riser required immediate repair.
- The building's electrical riser runs from the basement to the top floor.
- The plumber installed a new riser for the hot water system.