footfall

中文来自 ECDICT

foot词根/词干

“part of the human leg below the ankle”

fall词根/词干

“act of moving to a lower position under the effect of gravity”

From foot (“part of the human leg below the ankle”) +‎ fall (“act of moving to a lower position under the effect of gravity”, noun).

名词 Noun

(countable) The sound made by a footstep; also, the footstep or step itself.
(uncountable, originally and chiefly UK, Malaysia) The number of pedestrians going into or passing through a place (especially a commercial