The machinery is a form of a subsoiler with a single blade.
This one had no fingers, but a single broad blade like a cleaver.
He realized with a start that every single blade of grass was the same.
He touched a single blade of grass, let his mind shape it from hair roots to tip.
Nowhere did Erwal see an open space, a single blade of grass.
"And after all this time not a single blade of grass will grow."
Propellers can have a single blade, but in practice there are nearly always more than one so as to balance the forces involved.
As we left Gatwick and drove west, not a single blade of green grass was to be seen.
The simplest model sold includes only a single blade.
Not a single blade of grass can grow but that He wills it.