Definify.com

Webster 1913 Edition

Noun.

Anything that floors or upsets a person, as a blow that knocks him down; a conclusive answer or retort; a task that exceeds one’s abilities.

[Colloq.]

floorer ‎(plural floorers)

Someone who floors, lays flooring
(Britain) In skittles, the act of knocking down all of the skittles in one throw.

someone who floors