first floor
noun
Definition of first floor
1 : ground floor 1
2 chiefly British : the floor next above the ground floor
From the M-W Editors
15th Century
First Known Use of first floor
15th century
FIRST FLOOR Defined for English Language Learners
first floor
noun
Definition of first floor for English Language Learners
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: the floor of a building that is at ground level
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: the floor of a building that is immediately above the ground floor
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