To cover or furnish with a floor.
floor a house with pine boards
To strike down or lay level with the floor; to knock down.
(driving) To accelerate rapidly.
As soon as our driver saw an insurgent in a car holding a detonation device, he floored the pedal and was 2,000 feet away when that car bomb exploded. We escaped certain death in the nick of time!
To silence by a conclusive answer or retort.
Floored or crushed by him. — Coleridge
To amaze or greatly surprise.
We were floored by his confession.
To finish or make an end of.
I've floored my little-go work — ed Hughes
To set a lower bound.