the floor of a building that is at or nearest to the level of the ground around the building
on the floor closest to level with the ground
the solid part of the earth's surface
a rational motive for a belief or action
the loose soft material that makes up a large part of the land surface
the inside lower horizontal surface (as of a room, hallway, tent, or other structure)
a structure consisting of a room or set of rooms at a single position along a vertical scale
a lower limit
the ground on which people and animals move about
the bottom surface of any lake or other body of water
