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1. The floor of a building that is at or nearest to the level of the ground around the building
   - first floor [N. Amer], ground level
    
2. Becoming part of a venture at the beginning (regarded as position of advantage)
   "he got in on the ground floor"

1. On the floor closest to level with the ground
   "the ground-floor entrance is kept locked"

Derived forms: ground floors

See also: downstair, downstairs

Type of: beginning, floor, level, storey, story

Encyclopedia: Ground floor