1664130 jmdict A [id=2189429]
降り口；下り口；降口；下口
おりぐち；おりくち
[1][n]
  top (of a flight of stairs); end (of a moving walkway)
[2][n]
  exit door (e.g. of a bus); steps down (from a bus, etc.)
  [see=2790380・乗り口[1]]