Answer: staircases

AnswerCrossword Clue
STAIRCASESSome flights
STAIRCASESCertain flights
STAIRCASESLevel connectors
STAIRCASESWays up
STAIRCASESThey have their ups and downs
STAIRCASESFlights of steps.
STAIRCASESUp-down places at school.
STAIRCASESPerrons
STAIRCASESThings that may wind down
staircasesA set of stairs and its surrounding walls or structure
staircasesSTAIRCASE, a flight of stairs, its supporting framework, and, usually, a handrail or banisters