\Pound"al\, n. [From 5th {Pound}.] (Physics & Mech.)
A unit of force based upon the pound, foot, and second, being
the force which, acting on a pound avoirdupois for one
second, causes it to acquire by the of that time a velocity
of one foot per second. It is about equal to the weight of
half an ounce, and is 13,825 dynes.