Noun
upper story (plural upper stories)
Alternative form of upper storey
Soft-heartedness, in times like these, Shows sof'ness in the upper story. James Russell Lowell
High houses are mostly empty in the upper story. German Proverb
Each stoa had an upper story. Source: Internet
Hop houses are two-story buildings, of which the upper story has a slatted floor covered with burlap. Source: Internet