ground floor(redirected from got in on the ground floor)
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the floor of a building level or almost level with the ground
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The floor or story of a building at or slightly above grade level; excluding the basement but including all of the construction up to the floor above.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
The floor of a building which is nearest the surrounding surface of the ground; usually the first floor in the US but sometimes a floor between a basement or cellar and the first floor.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.