- ground-floor - on the floor closest to level with the ground; "the ground-floor entrance is kept locked"
Antonyms: upstairs, upstair (indirect, via downstairs)
- ground floor, first floor, ground level - the floor of a building that is at or nearest to the level of the ground around the building
--1 is a kind of floor, level, storey, story
- ground floor - becoming part of a venture at the beginning (regarded as position of advantage); "he got in on the ground floor"
--2 is a kind of beginning