Question

The English unit of force equal to 4.448 newtons

Answer 1

That's the "pound-force".

There's another English unit called the "pound-mass".
It's the mass that weighs 1 pound-force ON EARTH.

Now you can appreciate how the SI system can actually be LESS-confusing.

Answer 2

The English unit of force equal to 4.448 newtons is Pound.