riser


riser

noun

  1. a person who rises, especially from bed: to be an early riser.
  2. the vertical face of a stair step.
  3. any of a group of long boards or narrow platforms that can be combined in stepwise fashion: The choir stood on a horseshoe of risers behind the orchestra.
  4. a vertical pipe, duct, or conduit.
  5. Metallurgy. a chamber or enlarged opening at the top of a mold for allowing air to escape or adding extra metal.
  6. Nautical.
    1. a heavy strake of planking in the vicinity of the garboard strake in a wooden vessel.
    2. rising(def 10).

noun

  1. a person who rises, esp from bedan early riser
  2. the vertical part of a stair or step
  3. a vertical pipe, esp one within a building
n.

late 14c., “rebel,” agent noun from rise (v.). Meaning “one who rises” (from bed, in a certain manner) is mid-15c. Meaning “upright part of a step” is from 1771.

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