Floor Between the Ground and First Floor
This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1194, Puzzle 4 (Prize Chests).
Question is: Floor Between the Ground and First Floor
and the answer is: MEZZANINE
Word Meaning:
MEZZANINE — An intermediate floor or storey in between the main floors of a building; specifically, one that is directly above the ground floor which does not extend over the whole floorspace of the building, and so resembles a large balcony overlooking the ground floor; an entresol.
Definitions from Wiktionary.