stair riser (Q1433834)
vertical or deeply inclined part of stairs between two sucessive steps
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aliases riser
description vertical or deeply inclined part of stairs between two sucessive steps

External Links
(P646) /m/0283cml
(P1417) technology/riser-staircase
(P2167) 30241604
(P2671) /g/11b6nkd1tr
(P3827) stair-risers
(P7749) 340
(P8408) StairRiser
(P10431) Stair+Riser