staircase noun

ADJ. steep | broad, wide | narrow | elegant, grand, great | rickety | curving, spiral, sweeping, twisting, winding | moving | main | outside | back

VERB + STAIRCASE ascend, climb, go/run, etc. up, mount | descend, go/run, etc. down | use

STAIRCASE + VERB lead to sth The spiral staircase led to an upper gallery.

PREP. on the ~ They passed each other on the staircase.

PHRASES the bottom/foot/head/top of the staircase