STAIRCASE
Meaning of STAIRCASE in English
/stair"kays'/ , n.
a flight of stairs with its framework, banisters, etc., or a series of such flights.
[ 1615-25; STAIR + CASE 2 ]
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012