Definition of risers:
(n) :
Someone or something which rises.
(n) :
A platform or stand used to lift or elevate something.
(n) :
(carpentry) A vertical part of a step on a staircase.
(n) :
A vertical utility conduit, pipe or path between floors of a building for placement of cables (e.g. telephone, networking), or to convey fluids (e.g. gas, water).
(n) :
(archery) The main body of a bow.
(n) :
A pipe connecting an individual exhaust port of an internal combustion engine to the muffler, particularly on aircraft.