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1. A person who rises (especially from bed)
   "he's usually a late riser"
    
2. A vertical pipe in a building
   - riser pipe, riser pipeline, riser main
    
3. Structural member consisting of the vertical part of a stair or step

Derived forms: risers

See also: rise

Type of: individual, mortal, person, pipage, pipe, piping, somebody, someone, soul, structural member

Part of: stair, step

Encyclopedia: Riser