1. the bottom surface of a room that you walk on
2. a level or story of a building
3. the bottom surface of something such as the ocean or a forest

1. to surprise or confuse someone completely
Usage: informal
2. to knock someone down

Examples

• She dropped her keys on the kitchen floor.
• My office is on the third floor of the building.
• The senator took the floor to address the bill.
• Scientists explored the ocean floor near the island.
• His unexpected question completely floored me.
• The boxer floored his opponent with a powerful punch.
• Please don’t walk on the wet floor.
• We need to install new flooring throughout the house.