n.a unit of work equal to a force of one poundal moving through a distance of one foot
英汉双解大词典
foot-poundal
1.
N（名词）
a unit of work or energy equal to the work done when a force of one poundal moves through a distance of one foot: it is equal to 0.042 14 joule 英尺磅达; 功的单位