階かい段だん下したMeaningsNounNo-adjective1. under the staircase; understairsKanji used階floor (of a building)段step下belowComposed of階かい段だんstairs; stairway; staircaseNoun下したbelow; down; under; younger (e.g. daughter); bottom; beneath; underneath; just after; right after; inferiority; …Noun