(1)非常に驚かせる
(2)ひどく驚かせる
(3)surprise greatly; knock someone's socks off; "I was floored when I heard that I was promoted"
さらに詳しく
(1)ユリ科ツクバネソウ属の植物。学名：Paris verticillata M. v. Bieberst.
