Meaning of FLOOR in English
1》 the lower surface of a room, on which one may walk.
↘the bottom of the sea, a cave, etc.: the ocean ~.
2》 a storey of a building.
3》 ( the ~ ) the part of a legislative assembly in which members sit and from which they speak.
↘the right to speak in an assembly.
↘(in the Stock Exchange) the large central hall where trading takes place.
4》 a minimum level of prices or wages.
1》 provide with a ~.
2》 informal knock or punch to the ground.
↘baffle or confound completely.
OE flōr , of Gmc origin.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004